202122011639 has 2 divisors, whose sum is σ = 202122011640. Its totient is φ = 202122011638.

The previous prime is 202122011599. The next prime is 202122011669. The reversal of 202122011639 is 936110221202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202122011639 - 2²⁰ = 202120963063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202122011669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061005819 + 101061005820.

It is an arithmetic number, because the mean of its divisors is an integer number (101061005820).

Almost surely, 2^202122011639 is an apocalyptic number.

202122011639 is a deficient number, since it is larger than the sum of its proper divisors (1).

202122011639 is an equidigital number, since it uses as much as digits as its factorization.

202122011639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 202122011639 in words is "two hundred two billion, one hundred twenty-two million, eleven thousand, six hundred thirty-nine".