211331213020 has 12 divisors (see below), whose sum is σ = 443795547384. Its totient is φ = 84532485200.

The previous prime is 211331213017. The next prime is 211331213047. The reversal of 211331213020 is 20312133112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5283280306 + ... + 5283280345.

It is an arithmetic number, because the mean of its divisors is an integer number (36982962282).

Almost surely, 2^211331213020 is an apocalyptic number.

211331213020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211331213020 is an abundant number, since it is smaller than the sum of its proper divisors (232464334364).

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

211331213020 is a wasteful number, since it uses less digits than its factorization.

211331213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566560660 (or 10566560658 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211331213020 its reverse (20312133112), we get a palindrome (231643346132).

The spelling of 211331213020 in words is "two hundred eleven billion, three hundred thirty-one million, two hundred thirteen thousand, twenty".