421202222202131 has 2 divisors, whose sum is σ = 421202222202132. Its totient is φ = 421202222202130.

The previous prime is 421202222202101. The next prime is 421202222202197. The reversal of 421202222202131 is 131202222202124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421202222202131 is a prime.

It is a super-2 number, since 2×421202222202131² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421202222202131.

It is not a weakly prime, because it can be changed into another prime (421202222202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210601111101065 + 210601111101066.

It is an arithmetic number, because the mean of its divisors is an integer number (210601111101066).

Almost surely, 2^{421202222202131} is an apocalyptic number.

421202222202131 is a deficient number, since it is larger than the sum of its proper divisors (1).

421202222202131 is an equidigital number, since it uses as much as digits as its factorization.

421202222202131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 421202222202131 its reverse (131202222202124), we get a palindrome (552404444404255).

The spelling of 421202222202131 in words is "four hundred twenty-one trillion, two hundred two billion, two hundred twenty-two million, two hundred two thousand, one hundred thirty-one".