202121131319 has 2 divisors, whose sum is σ = 202121131320. Its totient is φ = 202121131318.

The previous prime is 202121131297. The next prime is 202121131351. The reversal of 202121131319 is 913131121202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202121131319 is a prime.

It is a super-2 number, since 2×202121131319² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202121131019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060565659 + 101060565660.

It is an arithmetic number, because the mean of its divisors is an integer number (101060565660).

Almost surely, 2^202121131319 is an apocalyptic number.

202121131319 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121131319 is an equidigital number, since it uses as much as digits as its factorization.

202121131319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 202121131319 in words is "two hundred two billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred nineteen".