211320232100220 has 96 divisors (see below), whose sum is σ = 612104547539520. Its totient is φ = 54408481576960.

The previous prime is 211320232100209. The next prime is 211320232100303. The reversal of 211320232100220 is 22001232023112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284399104 + ... + 285141176.

It is an arithmetic number, because the mean of its divisors is an integer number (6376089036870).

Almost surely, 2^{211320232100220} is an apocalyptic number.

211320232100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211320232100220 is an abundant number, since it is smaller than the sum of its proper divisors (400784315439300).

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

211320232100220 is a wasteful number, since it uses less digits than its factorization.

211320232100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905775 (or 905773 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 211320232100220 its reverse (22001232023112), we get a palindrome (233321464123332).

The spelling of 211320232100220 in words is "two hundred eleven trillion, three hundred twenty billion, two hundred thirty-two million, one hundred thousand, two hundred twenty".