202100022021 has 8 divisors (see below), whose sum is σ = 269491798720. Its totient is φ = 134720796672.

The previous prime is 202100022011. The next prime is 202100022041. The reversal of 202100022021 is 120220001202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202100022021 - 2¹⁴ = 202100005637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202100021988 and 202100022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100022001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3100201 + ... + 3164718.

It is an arithmetic number, because the mean of its divisors is an integer number (33686474840).

Almost surely, 2^202100022021 is an apocalyptic number.

It is an amenable number.

202100022021 is a deficient number, since it is larger than the sum of its proper divisors (67391776699).

202100022021 is a wasteful number, since it uses less digits than its factorization.

202100022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275675.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202100022021 its reverse (120220001202), we get a palindrome (322320023223).

The spelling of 202100022021 in words is "two hundred two billion, one hundred million, twenty-two thousand, twenty-one".