101202120020 has 12 divisors (see below), whose sum is σ = 212524452084. Its totient is φ = 40480848000.

The previous prime is 101202120017. The next prime is 101202120037. The reversal of 101202120020 is 20021202101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48697896976 + 52504223044 = 220676^2 + 229138^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101202119983 and 101202120010.

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, 2530052981 + ... + 2530053020.

It is an arithmetic number, because the mean of its divisors is an integer number (17710371007).

Almost surely, 2^101202120020 is an apocalyptic number.

101202120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101202120020 is an abundant number, since it is smaller than the sum of its proper divisors (111322332064).

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

101202120020 is a wasteful number, since it uses less digits than its factorization.

101202120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060106010 (or 5060106008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101202120020 its reverse (20021202101), we get a palindrome (121223322121).

The spelling of 101202120020 in words is "one hundred one billion, two hundred two million, one hundred twenty thousand, twenty".