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12210231210 = 2351392928113
BaseRepresentation
bin10110101111100100…
…10101011110101010
31011111221201000100120
423113302111132222
5200001304344320
65335335344110
7611403152502
oct132762253652
934457630316
1012210231210
1151a63a2481
122449222036
1311c78919a8
1483b904a02
154b6e4b440
hex2d7c957aa

12210231210 has 32 divisors (see below), whose sum is σ = 29515389120. Its totient is φ = 3232635648.

The previous prime is 12210231199. The next prime is 12210231211. The reversal of 12210231210 is 1213201221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12210231210.

It is not an unprimeable number, because it can be changed into a prime (12210231211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459887 + ... + 1468226.

It is an arithmetic number, because the mean of its divisors is an integer number (922355910).

Almost surely, 212210231210 is an apocalyptic number.

12210231210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210231210 is an abundant number, since it is smaller than the sum of its proper divisors (17305157910).

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

12210231210 is a wasteful number, since it uses less digits than its factorization.

12210231210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928262.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12210231210 its reverse (1213201221), we get a palindrome (13423432431).

The spelling of 12210231210 in words is "twelve billion, two hundred ten million, two hundred thirty-one thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 30 139 278 417 695 834 1390 2085 4170 2928113 5856226 8784339 14640565 17568678 29281130 43921695 87843390 407007707 814015414 1221023121 2035038535 2442046242 4070077070 6105115605 12210231210