100212222020 has 12 divisors (see below), whose sum is σ = 210445666284. Its totient is φ = 40084888800.

The previous prime is 100212221897. The next prime is 100212222031. The reversal of 100212222020 is 20222212001.

It can be written as a sum of positive squares in 2 ways, for example, as 23264790784 + 76947431236 = 152528^2 + 277394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100212221986 and 100212222004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505305531 + ... + 2505305570.

It is an arithmetic number, because the mean of its divisors is an integer number (17537138857).

Almost surely, 2^100212222020 is an apocalyptic number.

100212222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212222020 is an abundant number, since it is smaller than the sum of its proper divisors (110233444264).

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

100212222020 is a wasteful number, since it uses less digits than its factorization.

100212222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010611110 (or 5010611108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100212222020 its reverse (20222212001), we get a palindrome (120434434021).

The spelling of 100212222020 in words is "one hundred billion, two hundred twelve million, two hundred twenty-two thousand, twenty".