202210120021 has 16 divisors (see below), whose sum is σ = 249148488064. Its totient is φ = 159813964224.

The previous prime is 202210119983. The next prime is 202210120051. The reversal of 202210120021 is 120021012202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202210120021 - 2⁹ = 202210119509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 202210119983 and 202210120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210120051) 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, 1142430 + ... + 1307503.

It is an arithmetic number, because the mean of its divisors is an integer number (15571780504).

Almost surely, 2^202210120021 is an apocalyptic number.

It is an amenable number.

202210120021 is a deficient number, since it is larger than the sum of its proper divisors (46938368043).

202210120021 is a wasteful number, since it uses less digits than its factorization.

202210120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450860.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202210120021 its reverse (120021012202), we get a palindrome (322231132223).

The spelling of 202210120021 in words is "two hundred two billion, two hundred ten million, one hundred twenty thousand, twenty-one".