212102011121020 has 24 divisors (see below), whose sum is σ = 445414694919264. Its totient is φ = 84840714626496.

The previous prime is 212102011120913. The next prime is 212102011121089. The reversal of 212102011121020 is 20121110201212.

It is a junction number, because it is equal to n+sod(n) for n = 212102011120985 and 212102011121003.

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, 15728209 + ... + 25914871.

It is an arithmetic number, because the mean of its divisors is an integer number (18558945621636).

Almost surely, 2^{212102011121020} is an apocalyptic number.

212102011121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102011121020 is an abundant number, since it is smaller than the sum of its proper divisors (233312683798244).

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

212102011121020 is a wasteful number, since it uses less digits than its factorization.

212102011121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11227749 (or 11227747 counting only the distinct ones).

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

Adding to 212102011121020 its reverse (20121110201212), we get a palindrome (232223121322232).

The spelling of 212102011121020 in words is "two hundred twelve trillion, one hundred two billion, eleven million, one hundred twenty-one thousand, twenty".