212120020220120 has 64 divisors (see below), whose sum is σ = 481911268849920. Its totient is φ = 84022927473024.

The previous prime is 212120020220117. The next prime is 212120020220137. The reversal of 212120020220120 is 21022020021212.

It is a happy number.

It is a congruent number.

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, 288308639 + ... + 289043441.

It is an arithmetic number, because the mean of its divisors is an integer number (7529863575780).

Almost surely, 2^{212120020220120} is an apocalyptic number.

212120020220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120020220120 is an abundant number, since it is smaller than the sum of its proper divisors (269791248629800).

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

212120020220120 is a wasteful number, since it uses less digits than its factorization.

212120020220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804984 (or 804980 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120020220120 its reverse (21022020021212), we get a palindrome (233142040241332).

The spelling of 212120020220120 in words is "two hundred twelve trillion, one hundred twenty billion, twenty million, two hundred twenty thousand, one hundred twenty".