100421525331 has 8 divisors (see below), whose sum is σ = 148772630160. Its totient is φ = 66947683536.

The previous prime is 100421525327. The next prime is 100421525339. The reversal of 100421525331 is 133525124001.

100421525331 is a `hidden beast` number, since 100 + 4 + 2 + 1 + 525 + 3 + 31 = 666.

It is not a de Polignac number, because 100421525331 - 2² = 100421525327 is a prime.

It is a super-2 number, since 2×100421525331² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3719315753 = 100421525331 / (1 + 0 + 0 + 4 + 2 + 1 + 5 + 2 + 5 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 100421525295 and 100421525304.

It is not an unprimeable number, because it can be changed into a prime (100421525339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859657850 + ... + 1859657903.

It is an arithmetic number, because the mean of its divisors is an integer number (18596578770).

Almost surely, 2^100421525331 is an apocalyptic number.

100421525331 is a deficient number, since it is larger than the sum of its proper divisors (48351104829).

100421525331 is an equidigital number, since it uses as much as digits as its factorization.

100421525331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719315762 (or 3719315756 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 100421525331 its reverse (133525124001), we get a palindrome (233946649332).

The spelling of 100421525331 in words is "one hundred billion, four hundred twenty-one million, five hundred twenty-five thousand, three hundred thirty-one".