100021012212 has 24 divisors (see below), whose sum is σ = 254598940512. Its totient is φ = 30309397600.

The previous prime is 100021012207. The next prime is 100021012253. The reversal of 100021012212 is 212210120001.

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

It is a congruent number.

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, 378867339 + ... + 378867602.

It is an arithmetic number, because the mean of its divisors is an integer number (10608289188).

Almost surely, 2^100021012212 is an apocalyptic number.

100021012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100021012212 is an abundant number, since it is smaller than the sum of its proper divisors (154577928300).

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

100021012212 is a wasteful number, since it uses less digits than its factorization.

100021012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757734959 (or 757734957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100021012212 its reverse (212210120001), we get a palindrome (312231132213).

The spelling of 100021012212 in words is "one hundred billion, twenty-one million, twelve thousand, two hundred twelve".