211020311020 has 12 divisors (see below), whose sum is σ = 443142653184. Its totient is φ = 84408124400.

The previous prime is 211020310993. The next prime is 211020311023. The reversal of 211020311020 is 20113020112.

It is not an unprimeable number, because it can be changed into a prime (211020311023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275507756 + ... + 5275507795.

It is an arithmetic number, because the mean of its divisors is an integer number (36928554432).

Almost surely, 2^211020311020 is an apocalyptic number.

211020311020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020311020 is an abundant number, since it is smaller than the sum of its proper divisors (232122342164).

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

211020311020 is a wasteful number, since it uses less digits than its factorization.

211020311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551015560 (or 10551015558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 211020311020 its reverse (20113020112), we get a palindrome (231133331132).

The spelling of 211020311020 in words is "two hundred eleven billion, twenty million, three hundred eleven thousand, twenty".