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13220122233 = 3171998313879
BaseRepresentation
bin11000100111111101…
…10000111001111001
31021010022222210101210
430103332300321321
5204033322402413
610023453033333
7645415120263
oct142376607171
937108883353
1013220122233
11567446155a
12268b485849
131328b82c46
148d5aa8b33
155259333c3
hex313fb0e79

13220122233 has 32 divisors (see below), whose sum is σ = 19667404800. Its totient is φ = 7849840896.

The previous prime is 13220122187. The next prime is 13220122247. The reversal of 13220122233 is 33222102231.

It is a happy number.

It is not a de Polignac number, because 13220122233 - 29 = 13220121721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13220122283) 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, 945588 + ... + 959466.

It is an arithmetic number, because the mean of its divisors is an integer number (614606400).

Almost surely, 213220122233 is an apocalyptic number.

It is an amenable number.

13220122233 is a deficient number, since it is larger than the sum of its proper divisors (6447282567).

13220122233 is a wasteful number, since it uses less digits than its factorization.

13220122233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14901.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13220122233 its reverse (33222102231), we get a palindrome (46442224464).

The spelling of 13220122233 in words is "thirteen billion, two hundred twenty million, one hundred twenty-two thousand, two hundred thirty-three".

Divisors: 1 3 17 19 51 57 323 969 983 2949 13879 16711 18677 41637 50133 56031 235943 263701 317509 707829 791103 952527 4482917 13448751 13643057 40929171 231931969 259218083 695795907 777654249 4406707411 13220122233