202212022021 has 2 divisors, whose sum is σ = 202212022022. Its totient is φ = 202212022020.

The previous prime is 202212021997. The next prime is 202212022031. The reversal of 202212022021 is 120220212202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145801021921 + 56411000100 = 381839^2 + 237510^2 .

It is a cyclic number.

It is not a de Polignac number, because 202212022021 - 2¹⁷ = 202211890949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202212021986 and 202212022004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202212022031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101106011010 + 101106011011.

It is an arithmetic number, because the mean of its divisors is an integer number (101106011011).

Almost surely, 2^202212022021 is an apocalyptic number.

It is an amenable number.

202212022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202212022021 is an equidigital number, since it uses as much as digits as its factorization.

202212022021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202212022021 its reverse (120220212202), we get a palindrome (322432234223).

The spelling of 202212022021 in words is "two hundred two billion, two hundred twelve million, twenty-two thousand, twenty-one".