100212121011020 has 24 divisors (see below), whose sum is σ = 212980941525744. Its totient is φ = 39601898422976.

The previous prime is 100212121011017. The next prime is 100212121011047. The reversal of 100212121011020 is 20110121212001.

It is a super-2 number, since 2×100212121011020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100212121010986 and 100212121011004.

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, 30184372139 + ... + 30184375458.

It is an arithmetic number, because the mean of its divisors is an integer number (8874205896906).

Almost surely, 2^{100212121011020} is an apocalyptic number.

100212121011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212121011020 is an abundant number, since it is smaller than the sum of its proper divisors (112768820514724).

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

100212121011020 is a wasteful number, since it uses less digits than its factorization.

100212121011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60368747689 (or 60368747687 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100212121011020 its reverse (20110121212001), we get a palindrome (120322242223021).

The spelling of 100212121011020 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty-one million, eleven thousand, twenty".