420121311223 has 2 divisors, whose sum is σ = 420121311224. Its totient is φ = 420121311222.

The previous prime is 420121311187. The next prime is 420121311293. The reversal of 420121311223 is 322113121024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420121311223 - 2⁹ = 420121310711 is a prime.

It is a super-2 number, since 2×420121311223² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420121311194 and 420121311203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420121311293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210060655611 + 210060655612.

It is an arithmetic number, because the mean of its divisors is an integer number (210060655612).

Almost surely, 2^420121311223 is an apocalyptic number.

420121311223 is a deficient number, since it is larger than the sum of its proper divisors (1).

420121311223 is an equidigital number, since it uses as much as digits as its factorization.

420121311223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 420121311223 its reverse (322113121024), we get a palindrome (742234432247).

The spelling of 420121311223 in words is "four hundred twenty billion, one hundred twenty-one million, three hundred eleven thousand, two hundred twenty-three".