101202102021 has 16 divisors (see below), whose sum is σ = 135568097280. Its totient is φ = 67152538800.

The previous prime is 101202101981. The next prime is 101202102031. The reversal of 101202102021 is 120201202101.

It is not a de Polignac number, because 101202102021 - 2¹⁰ = 101202100997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101202101988 and 101202102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101202102031) 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, 852420 + ... + 963858.

It is an arithmetic number, because the mean of its divisors is an integer number (8473006080).

Almost surely, 2^101202102021 is an apocalyptic number.

It is an amenable number.

101202102021 is a deficient number, since it is larger than the sum of its proper divisors (34365995259).

101202102021 is a wasteful number, since it uses less digits than its factorization.

101202102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112856.

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

Adding to 101202102021 its reverse (120201202101), we get a palindrome (221403304122).

The spelling of 101202102021 in words is "one hundred one billion, two hundred two million, one hundred two thousand, twenty-one".