212101202020220 has 24 divisors (see below), whose sum is σ = 446475561310800. Its totient is φ = 84637997556992.

The previous prime is 212101202020159. The next prime is 212101202020237. The reversal of 212101202020220 is 22020202101212.

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 7 ways as a sum of consecutive naturals, for example, 12655194605 + ... + 12655211364.

It is an arithmetic number, because the mean of its divisors is an integer number (18603148387950).

Almost surely, 2^{212101202020220} is an apocalyptic number.

212101202020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101202020220 is an abundant number, since it is smaller than the sum of its proper divisors (234374359290580).

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

212101202020220 is a wasteful number, since it uses less digits than its factorization.

212101202020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25310406397 (or 25310406395 counting only the distinct ones).

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

Adding to 212101202020220 its reverse (22020202101212), we get a palindrome (234121404121432).

The spelling of 212101202020220 in words is "two hundred twelve trillion, one hundred one billion, two hundred two million, twenty thousand, two hundred twenty".