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122121031011112 = 2372473881816699
BaseRepresentation
bin11011110001000110000100…
…101011000100101100101000
3121000101122201121211021202201
4123301012010223010230220
5112001312332414323422
61111421343244305544
734502644664255020
oct3361060453045450
9530348647737681
10122121031011112
1135a03269354011
1211843a5a2422b4
13531ac6b652843
142222991b66a80
15e1b9acd93727
hex6f1184ac4b28

122121031011112 has 32 divisors (see below), whose sum is σ = 261793741896000. Its totient is φ = 52316421058944.

The previous prime is 122121031011059. The next prime is 122121031011169. The reversal of 122121031011112 is 211110130121221.

It is a self number, because there is not a number n which added to its sum of digits gives 122121031011112.

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, 440769862 + ... + 441046837.

It is an arithmetic number, because the mean of its divisors is an integer number (8181054434250).

Almost surely, 2122121031011112 is an apocalyptic number.

It is an amenable number.

122121031011112 is an abundant number, since it is smaller than the sum of its proper divisors (139672710884888).

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

122121031011112 is a wasteful number, since it uses less digits than its factorization.

122121031011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881819185 (or 881819181 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 122121031011112 its reverse (211110130121221), we get a palindrome (333231161132333).

The spelling of 122121031011112 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, thirty-one million, eleven thousand, one hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 2473 4946 9892 17311 19784 34622 69244 138488 881816699 1763633398 3527266796 6172716893 7054533592 12345433786 24690867572 49381735144 2180732696627 4361465393254 8722930786508 15265128876389 17445861573016 30530257752778 61060515505556 122121031011112