20100100111212 has 96 divisors (see below), whose sum is σ = 51216342912000. Its totient is φ = 6084697881600.

The previous prime is 20100100111193. The next prime is 20100100111213. The reversal of 20100100111212 is 21211100100102.

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

It is not an unprimeable number, because it can be changed into a prime (20100100111213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704041914 + ... + 704070462.

It is an arithmetic number, because the mean of its divisors is an integer number (533503572000).

Almost surely, 2^{20100100111212} is an apocalyptic number.

20100100111212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20100100111212 is an abundant number, since it is smaller than the sum of its proper divisors (31116242800788).

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

20100100111212 is a wasteful number, since it uses less digits than its factorization.

20100100111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33847 (or 33845 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20100100111212 its reverse (21211100100102), we get a palindrome (41311200211314).

The spelling of 20100100111212 in words is "twenty trillion, one hundred billion, one hundred million, one hundred eleven thousand, two hundred twelve".