202032431221 has 2 divisors, whose sum is σ = 202032431222. Its totient is φ = 202032431220.

The previous prime is 202032431197. The next prime is 202032431257. The reversal of 202032431221 is 122134230202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195249096900 + 6783334321 = 441870^2 + 82361^2 .

It is a cyclic number.

It is not a de Polignac number, because 202032431221 - 2⁵ = 202032431189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202032431192 and 202032431201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202032431281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101016215610 + 101016215611.

It is an arithmetic number, because the mean of its divisors is an integer number (101016215611).

Almost surely, 2^202032431221 is an apocalyptic number.

It is an amenable number.

202032431221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202032431221 is an equidigital number, since it uses as much as digits as its factorization.

202032431221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 202032431221 its reverse (122134230202), we get a palindrome (324166661423).

The spelling of 202032431221 in words is "two hundred two billion, thirty-two million, four hundred thirty-one thousand, two hundred twenty-one".