101102021020 has 96 divisors (see below), whose sum is σ = 285065335296. Its totient is φ = 29088288000.

The previous prime is 101102020997. The next prime is 101102021029. The reversal of 101102021020 is 20120201101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101102020988 and 101102021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101102021029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505006 + ... + 2545045.

It is an arithmetic number, because the mean of its divisors is an integer number (2969430576).

Almost surely, 2^101102021020 is an apocalyptic number.

101102021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101102021020 is an abundant number, since it is smaller than the sum of its proper divisors (183963314276).

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

101102021020 is a wasteful number, since it uses less digits than its factorization.

101102021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050091 (or 5050089 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101102021020 its reverse (20120201101), we get a palindrome (121222222121).

The spelling of 101102021020 in words is "one hundred one billion, one hundred two million, twenty-one thousand, twenty".