212120100010020 has 48 divisors (see below), whose sum is σ = 594203698807488. Its totient is φ = 56539891547520.

The previous prime is 212120100009967. The next prime is 212120100010043. The reversal of 212120100010020 is 20010001021212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212120100009978 and 212120100010005.

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, 795754854 + ... + 796021373.

It is an arithmetic number, because the mean of its divisors is an integer number (12379243725156).

Almost surely, 2^{212120100010020} is an apocalyptic number.

212120100010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120100010020 is an abundant number, since it is smaller than the sum of its proper divisors (382083598797468).

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

212120100010020 is a wasteful number, since it uses less digits than its factorization.

212120100010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591778460 (or 1591778458 counting only the distinct ones).

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

Adding to 212120100010020 its reverse (20010001021212), we get a palindrome (232130101031232).

The spelling of 212120100010020 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred million, ten thousand, twenty".