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13031212012122 = 2317631852123761
BaseRepresentation
bin1011110110100001000011…
…0000110101001001011010
31201010202211120102000201110
42331220100300311021122
53202000410233341442
643414242310201150
72513321403335313
oct275502060651132
951122746360643
1013031212012122
114174562504437
1215656526531b6
13736ab818c345
143309dd40960a
15178e898c069c
hexbda10c3525a

13031212012122 has 64 divisors (see below), whose sum is σ = 27643647783168. Its totient is φ = 4081093632000.

The previous prime is 13031212012099. The next prime is 13031212012127. The reversal of 13031212012122 is 22121021213031.

It is not an unprimeable number, because it can be changed into a prime (13031212012127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548416722 + ... + 548440482.

It is an arithmetic number, because the mean of its divisors is an integer number (431931996612).

Almost surely, 213031212012122 is an apocalyptic number.

13031212012122 is an abundant number, since it is smaller than the sum of its proper divisors (14612435771046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13031212012122 is a wasteful number, since it uses less digits than its factorization.

13031212012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32935.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13031212012122 its reverse (22121021213031), we get a palindrome (35152233225153).

The spelling of 13031212012122 in words is "thirteen trillion, thirty-one billion, two hundred twelve million, twelve thousand, one hundred twenty-two".

Divisors: 1 2 3 6 17 34 51 102 631 1262 1893 3786 8521 10727 17042 21454 23761 25563 32181 47522 51126 64362 71283 142566 144857 289714 403937 434571 807874 869142 1211811 2423622 5376751 10753502 14993191 16130253 29986382 32260506 44979573 89959146 91404767 182809534 202467481 254884247 274214301 404934962 509768494 548428602 607402443 764652741 1214804886 1529305482 3441947177 6883894354 10325841531 20651683062 127756980511 255513961022 383270941533 766541883066 2171868668687 4343737337374 6515606006061 13031212012122