101211211020 has 48 divisors (see below), whose sum is σ = 283410096480. Its totient is φ = 26987874816.

The previous prime is 101211211019. The next prime is 101211211039. The reversal of 101211211020 is 20112112101.

It is a super-2 number, since 2×101211211020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101211210987 and 101211211005.

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, 1038714 + ... + 1131966.

It is an arithmetic number, because the mean of its divisors is an integer number (5904377010).

Almost surely, 2^101211211020 is an apocalyptic number.

101211211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211211020 is an abundant number, since it is smaller than the sum of its proper divisors (182198885460).

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

101211211020 is a wasteful number, since it uses less digits than its factorization.

101211211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111354 (or 111352 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101211211020 its reverse (20112112101), we get a palindrome (121323323121).

The spelling of 101211211020 in words is "one hundred one billion, two hundred eleven million, two hundred eleven thousand, twenty".