421069972201 has 2 divisors, whose sum is σ = 421069972202. Its totient is φ = 421069972200.

The previous prime is 421069972163. The next prime is 421069972237. The reversal of 421069972201 is 102279960124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325214716176 + 95855256025 = 570276^2 + 309605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421069972201 is a prime.

It is not a weakly prime, because it can be changed into another prime (421069972501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210534986100 + 210534986101.

It is an arithmetic number, because the mean of its divisors is an integer number (210534986101).

Almost surely, 2^421069972201 is an apocalyptic number.

It is an amenable number.

421069972201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421069972201 is an equidigital number, since it uses as much as digits as its factorization.

421069972201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 421069972201 in words is "four hundred twenty-one billion, sixty-nine million, nine hundred seventy-two thousand, two hundred one".