101022100020 has 120 divisors (see below), whose sum is σ = 327133137408. Its totient is φ = 26070206400.

The previous prime is 101022099977. The next prime is 101022100021. The reversal of 101022100020 is 20001220101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101022099975 and 101022100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101022100021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 955576 + ... + 1056015.

Almost surely, 2^101022100020 is an apocalyptic number.

101022100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101022100020 is an abundant number, since it is smaller than the sum of its proper divisors (226111037388).

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

101022100020 is a wasteful number, since it uses less digits than its factorization.

101022100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011643 (or 2011632 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 101022100020 its reverse (20001220101), we get a palindrome (121023320121).

The spelling of 101022100020 in words is "one hundred one billion, twenty-two million, one hundred thousand, twenty".