100001222121112 has 32 divisors (see below), whose sum is σ = 201979637480880. Its totient is φ = 46142046138240.

The previous prime is 100001222121109. The next prime is 100001222121113. The reversal of 100001222121112 is 211121222100001.

It is a super-2 number, since 2×100001222121112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001222121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128402314 + ... + 129178777.

Almost surely, 2^{100001222121112} is an apocalyptic number.

It is an amenable number.

100001222121112 is an abundant number, since it is smaller than the sum of its proper divisors (101978415359768).

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

100001222121112 is a wasteful number, since it uses less digits than its factorization.

100001222121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257584843 (or 257584839 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100001222121112 its reverse (211121222100001), we get a palindrome (311122444221113).

The spelling of 100001222121112 in words is "one hundred trillion, one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".