101002122021 has 16 divisors (see below), whose sum is σ = 141764100800. Its totient is φ = 63787782528.

The previous prime is 101002122017. The next prime is 101002122041. The reversal of 101002122021 is 120221200101.

It is not a de Polignac number, because 101002122021 - 2² = 101002122017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101002121988 and 101002122006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002122041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2330865 + ... + 2373801.

It is an arithmetic number, because the mean of its divisors is an integer number (8860256300).

Almost surely, 2^101002122021 is an apocalyptic number.

It is an amenable number.

101002122021 is a deficient number, since it is larger than the sum of its proper divisors (40761978779).

101002122021 is a wasteful number, since it uses less digits than its factorization.

101002122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84228.

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

Adding to 101002122021 its reverse (120221200101), we get a palindrome (221223322122).

The spelling of 101002122021 in words is "one hundred one billion, two million, one hundred twenty-two thousand, twenty-one".