101001222021 has 48 divisors (see below), whose sum is σ = 159405926400. Its totient is φ = 56702655072.

The previous prime is 101001222013. The next prime is 101001222053. The reversal of 101001222021 is 120222100101.

It is not a de Polignac number, because 101001222021 - 2³ = 101001222013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101001221988 and 101001222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001222061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23579746 + ... + 23584028.

It is an arithmetic number, because the mean of its divisors is an integer number (3320956800).

Almost surely, 2^101001222021 is an apocalyptic number.

It is an amenable number.

101001222021 is a deficient number, since it is larger than the sum of its proper divisors (58404704379).

101001222021 is a wasteful number, since it uses less digits than its factorization.

101001222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078 (or 7071 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101001222021 its reverse (120222100101), we get a palindrome (221223322122).

The spelling of 101001222021 in words is "one hundred one billion, one million, two hundred twenty-two thousand, twenty-one".