100400121131 has 4 divisors (see below), whose sum is σ = 100606282032. Its totient is φ = 100193960232.

The previous prime is 100400121097. The next prime is 100400121137. The reversal of 100400121131 is 131121004001.

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

It is a cyclic number.

It is not a de Polignac number, because 100400121131 - 2⁶ = 100400121067 is a prime.

It is a super-2 number, since 2×100400121131² (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 (100400121137) 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, 103079720 + ... + 103080693.

It is an arithmetic number, because the mean of its divisors is an integer number (25151570508).

Almost surely, 2^100400121131 is an apocalyptic number.

100400121131 is a deficient number, since it is larger than the sum of its proper divisors (206160901).

100400121131 is an equidigital number, since it uses as much as digits as its factorization.

100400121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206160900.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 100400121131 its reverse (131121004001), we get a palindrome (231521125132).

The spelling of 100400121131 in words is "one hundred billion, four hundred million, one hundred twenty-one thousand, one hundred thirty-one".