100121111100012 has 48 divisors (see below), whose sum is σ = 239935370717952. Its totient is φ = 32470967229120.

The previous prime is 100121111100007. The next prime is 100121111100029. The reversal of 100121111100012 is 210001111121001.

It is a super-2 number, since 2×100121111100012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16969003 + ... + 22095005.

It is an arithmetic number, because the mean of its divisors is an integer number (4998653556624).

Almost surely, 2^{100121111100012} is an apocalyptic number.

100121111100012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100121111100012 is an abundant number, since it is smaller than the sum of its proper divisors (139814259617940).

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

100121111100012 is a wasteful number, since it uses less digits than its factorization.

100121111100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170038 (or 5170036 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100121111100012 its reverse (210001111121001), we get a palindrome (310122222221013).

The spelling of 100121111100012 in words is "one hundred trillion, one hundred twenty-one billion, one hundred eleven million, one hundred thousand, twelve".