212220212120220 has 48 divisors (see below), whose sum is σ = 594473942351520. Its totient is φ = 56567547192576.

The previous prime is 212220212120219. The next prime is 212220212120243. The reversal of 212220212120220 is 22021212022212.

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, 765778207 + ... + 766055286.

It is an arithmetic number, because the mean of its divisors is an integer number (12384873798990).

Almost surely, 2^{212220212120220} is an apocalyptic number.

212220212120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220212120220 is an abundant number, since it is smaller than the sum of its proper divisors (382253730231300).

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

212220212120220 is a wasteful number, since it uses less digits than its factorization.

212220212120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531835814 (or 1531835812 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212220212120220 its reverse (22021212022212), we get a palindrome (234241424142432).

The spelling of 212220212120220 in words is "two hundred twelve trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty".