212102110112020 has 12 divisors (see below), whose sum is σ = 445414431235284. Its totient is φ = 84840844044800.

The previous prime is 212102110111993. The next prime is 212102110112033. The reversal of 212102110112020 is 20211011201212.

It can be written as a sum of positive squares in 2 ways, for example, as 108658483427844 + 103443626684176 = 10423938^2 + 10170724^2 .

It is a super-2 number, since 2×212102110112020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212102110111985 and 212102110112003.

It is a congruent number.

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, 5302552752781 + ... + 5302552752820.

It is an arithmetic number, because the mean of its divisors is an integer number (37117869269607).

Almost surely, 2^{212102110112020} is an apocalyptic number.

212102110112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102110112020 is an abundant number, since it is smaller than the sum of its proper divisors (233312321123264).

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

212102110112020 is a wasteful number, since it uses less digits than its factorization.

212102110112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605105505610 (or 10605105505608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212102110112020 its reverse (20211011201212), we get a palindrome (232313121313232).

The spelling of 212102110112020 in words is "two hundred twelve trillion, one hundred two billion, one hundred ten million, one hundred twelve thousand, twenty".