100001212111122 has 64 divisors (see below), whose sum is σ = 229152392561664. Its totient is φ = 28499535754560.

The previous prime is 100001212111117. The next prime is 100001212111133. The reversal of 100001212111122 is 221111212100001.

It is a happy number.

It is a super-2 number, since 2×100001212111122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67946668 + ... + 69402824.

It is an arithmetic number, because the mean of its divisors is an integer number (3580506133776).

Almost surely, 2^{100001212111122} is an apocalyptic number.

100001212111122 is an abundant number, since it is smaller than the sum of its proper divisors (129151180450542).

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

100001212111122 is a wasteful number, since it uses less digits than its factorization.

100001212111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460303.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100001212111122 its reverse (221111212100001), we get a palindrome (321112424211123).

The spelling of 100001212111122 in words is "one hundred trillion, one billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-two".