421211041057 has 2 divisors, whose sum is σ = 421211041058. Its totient is φ = 421211041056.

The previous prime is 421211040979. The next prime is 421211041063. The reversal of 421211041057 is 750140112124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418299791121 + 2911249936 = 646761^2 + 53956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421211041057 is a prime.

It is a super-2 number, since 2×421211041057² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421211041457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210605520528 + 210605520529.

It is an arithmetic number, because the mean of its divisors is an integer number (210605520529).

Almost surely, 2^421211041057 is an apocalyptic number.

It is an amenable number.

421211041057 is a deficient number, since it is larger than the sum of its proper divisors (1).

421211041057 is an equidigital number, since it uses as much as digits as its factorization.

421211041057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 421211041057 in words is "four hundred twenty-one billion, two hundred eleven million, forty-one thousand, fifty-seven".