100121112331 has 4 divisors (see below), whose sum is σ = 103350825664. Its totient is φ = 96891399000.

The previous prime is 100121112271. The next prime is 100121112341. The reversal of 100121112331 is 133211121001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100121112331 - 2²¹ = 100119015179 is a prime.

It is a super-2 number, since 2×100121112331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121112341) 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, 1614856620 + ... + 1614856681.

It is an arithmetic number, because the mean of its divisors is an integer number (25837706416).

Almost surely, 2^100121112331 is an apocalyptic number.

100121112331 is a deficient number, since it is larger than the sum of its proper divisors (3229713333).

100121112331 is an equidigital number, since it uses as much as digits as its factorization.

100121112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229713332.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 100121112331 its reverse (133211121001), we get a palindrome (233332233332).

The spelling of 100121112331 in words is "one hundred billion, one hundred twenty-one million, one hundred twelve thousand, three hundred thirty-one".