421010123331 has 16 divisors (see below), whose sum is σ = 641859588864. Its totient is φ = 240457080864.

The previous prime is 421010123329. The next prime is 421010123381. The reversal of 421010123331 is 133321010124.

It is not a de Polignac number, because 421010123331 - 2¹ = 421010123329 is a prime.

It is a super-2 number, since 2×421010123331² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 421010123298 and 421010123307.

It is not an unprimeable number, because it can be changed into a prime (421010123321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4962456 + ... + 5046581.

It is an arithmetic number, because the mean of its divisors is an integer number (40116224304).

Almost surely, 2^421010123331 is an apocalyptic number.

421010123331 is a deficient number, since it is larger than the sum of its proper divisors (220849465533).

421010123331 is a wasteful number, since it uses less digits than its factorization.

421010123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011050.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 421010123331 its reverse (133321010124), we get a palindrome (554331133455).

The spelling of 421010123331 in words is "four hundred twenty-one billion, ten million, one hundred twenty-three thousand, three hundred thirty-one".