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12012211122 = 2319105370273
BaseRepresentation
bin10110010111111101…
…11100101110110010
31011000011002112212020
423023332330232302
5144100111223442
65303543212310
7603450052452
oct131376745662
934004075766
1012012211122
11510464200a
1223b2a47096
13119584b942
1481d4b9d62
154a48839ec
hex2cbfbcbb2

12012211122 has 16 divisors (see below), whose sum is σ = 25288865760. Its totient is φ = 3793329792.

The previous prime is 12012211069. The next prime is 12012211147. The reversal of 12012211122 is 22111221021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52685023 + ... + 52685250.

It is an arithmetic number, because the mean of its divisors is an integer number (1580554110).

Almost surely, 212012211122 is an apocalyptic number.

12012211122 is an abundant number, since it is smaller than the sum of its proper divisors (13276654638).

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

12012211122 is a wasteful number, since it uses less digits than its factorization.

12012211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105370297.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012211122 its reverse (22111221021), we get a palindrome (34123432143).

The spelling of 12012211122 in words is "twelve billion, twelve million, two hundred eleven thousand, one hundred twenty-two".

Divisors: 1 2 3 6 19 38 57 114 105370273 210740546 316110819 632221638 2002035187 4004070374 6006105561 12012211122