421151201 has 2 divisors, whose sum is σ = 421151202. Its totient is φ = 421151200.

The previous prime is 421151189. The next prime is 421151209. The reversal of 421151201 is 102151124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315986176 + 105165025 = 17776^2 + 10255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421151201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421151201.

It is not a weakly prime, because it can be changed into another prime (421151209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210575600 + 210575601.

It is an arithmetic number, because the mean of its divisors is an integer number (210575601).

Almost surely, 2^421151201 is an apocalyptic number.

It is an amenable number.

421151201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421151201 is an equidigital number, since it uses as much as digits as its factorization.

421151201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 421151201 is about 20521.9687408397. The cubic root of 421151201 is about 749.5708365459.

The spelling of 421151201 in words is "four hundred twenty-one million, one hundred fifty-one thousand, two hundred one".