420312021113 has 2 divisors, whose sum is σ = 420312021114. Its totient is φ = 420312021112.

The previous prime is 420312021089. The next prime is 420312021119. The reversal of 420312021113 is 311120213024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257457804409 + 162854216704 = 507403^2 + 403552^2 .

It is a cyclic number.

It is not a de Polignac number, because 420312021113 - 2²⁶ = 420244912249 is a prime.

It is not a weakly prime, because it can be changed into another prime (420312021119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210156010556 + 210156010557.

It is an arithmetic number, because the mean of its divisors is an integer number (210156010557).

Almost surely, 2^420312021113 is an apocalyptic number.

It is an amenable number.

420312021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

420312021113 is an equidigital number, since it uses as much as digits as its factorization.

420312021113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 420312021113 its reverse (311120213024), we get a palindrome (731432234137).

The spelling of 420312021113 in words is "four hundred twenty billion, three hundred twelve million, twenty-one thousand, one hundred thirteen".