421031061223 has 2 divisors, whose sum is σ = 421031061224. Its totient is φ = 421031061222.

The previous prime is 421031061167. The next prime is 421031061233. The reversal of 421031061223 is 322160130124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421031061223 - 2¹³ = 421031053031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421031061233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210515530611 + 210515530612.

It is an arithmetic number, because the mean of its divisors is an integer number (210515530612).

Almost surely, 2^421031061223 is an apocalyptic number.

421031061223 is a deficient number, since it is larger than the sum of its proper divisors (1).

421031061223 is an equidigital number, since it uses as much as digits as its factorization.

421031061223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 421031061223 its reverse (322160130124), we get a palindrome (743191191347).

The spelling of 421031061223 in words is "four hundred twenty-one billion, thirty-one million, sixty-one thousand, two hundred twenty-three".