421268133881 has 4 divisors (see below), whose sum is σ = 481449295872. Its totient is φ = 361086971892.

The previous prime is 421268133863. The next prime is 421268133887. The reversal of 421268133881 is 188331862124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421268133881 - 2¹⁸ = 421267871737 is a prime.

It is a super-2 number, since 2×421268133881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421268133887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30090580985 + ... + 30090580998.

It is an arithmetic number, because the mean of its divisors is an integer number (120362323968).

Almost surely, 2^421268133881 is an apocalyptic number.

It is an amenable number.

421268133881 is a deficient number, since it is larger than the sum of its proper divisors (60181161991).

421268133881 is an equidigital number, since it uses as much as digits as its factorization.

421268133881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60181161990.

The product of its digits is 442368, while the sum is 47.

The spelling of 421268133881 in words is "four hundred twenty-one billion, two hundred sixty-eight million, one hundred thirty-three thousand, eight hundred eighty-one".