101020212220 has 48 divisors (see below), whose sum is σ = 225542802240. Its totient is φ = 37921934336.

The previous prime is 101020212211. The next prime is 101020212269. The reversal of 101020212220 is 22212020101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101020212220.

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, 2047405 + ... + 2096164.

It is an arithmetic number, because the mean of its divisors is an integer number (4698808380).

Almost surely, 2^101020212220 is an apocalyptic number.

101020212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101020212220 is an abundant number, since it is smaller than the sum of its proper divisors (124522590020).

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

101020212220 is a wasteful number, since it uses less digits than its factorization.

101020212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143654 (or 4143652 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101020212220 its reverse (22212020101), we get a palindrome (123232232321).

The spelling of 101020212220 in words is "one hundred one billion, twenty million, two hundred twelve thousand, two hundred twenty".