100111222131 has 8 divisors (see below), whose sum is σ = 133483653120. Its totient is φ = 66739802952.

The previous prime is 100111222121. The next prime is 100111222187. The reversal of 100111222131 is 131222111001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100111222131 - 2³⁰ = 99037480307 is a prime.

It is a super-2 number, since 2×100111222131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100111222131.

It is not an unprimeable number, because it can be changed into a prime (100111222121) 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, 19990 + ... + 447908.

It is an arithmetic number, because the mean of its divisors is an integer number (16685456640).

Almost surely, 2^100111222131 is an apocalyptic number.

100111222131 is a deficient number, since it is larger than the sum of its proper divisors (33372430989).

100111222131 is an equidigital number, since it uses as much as digits as its factorization.

100111222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505905.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 100111222131 its reverse (131222111001), we get a palindrome (231333333132).

The spelling of 100111222131 in words is "one hundred billion, one hundred eleven million, two hundred twenty-two thousand, one hundred thirty-one".