202000022021 has 24 divisors (see below), whose sum is σ = 235814592384. Its totient is φ = 173032770960.

The previous prime is 202000022017. The next prime is 202000022039. The reversal of 202000022021 is 120220000202.

It is not a de Polignac number, because 202000022021 - 2² = 202000022017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202000021993 and 202000022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202000024021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37191176 + ... + 37196606.

It is an arithmetic number, because the mean of its divisors is an integer number (9825608016).

Almost surely, 2^202000022021 is an apocalyptic number.

It is an amenable number.

202000022021 is a deficient number, since it is larger than the sum of its proper divisors (33814570363).

202000022021 is an frugal number, since it uses more digits than its factorization.

202000022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679 (or 7651 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 202000022021 its reverse (120220000202), we get a palindrome (322220022223).

The spelling of 202000022021 in words is "two hundred two billion, twenty-two thousand, twenty-one".