212102010111020 has 48 divisors (see below), whose sum is σ = 471629684635200. Its totient is φ = 79847692007424.

The previous prime is 212102010111001. The next prime is 212102010111023. The reversal of 212102010111020 is 20111010201212.

It is a junction number, because it is equal to n+sod(n) for n = 212102010110986 and 212102010111004.

It is not an unprimeable number, because it can be changed into a prime (212102010111023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323281 + ... + 20638679.

It is an arithmetic number, because the mean of its divisors is an integer number (9825618429900).

Almost surely, 2^{212102010111020} is an apocalyptic number.

212102010111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102010111020 is an abundant number, since it is smaller than the sum of its proper divisors (259527674524180).

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

212102010111020 is a wasteful number, since it uses less digits than its factorization.

212102010111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19347722 (or 19347720 counting only the distinct ones).

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

Adding to 212102010111020 its reverse (20111010201212), we get a palindrome (232213020312232).

The spelling of 212102010111020 in words is "two hundred twelve trillion, one hundred two billion, ten million, one hundred eleven thousand, twenty".