120011100031 has 4 divisors (see below), whose sum is σ = 120535166200. Its totient is φ = 119487033864.

The previous prime is 120011100023. The next prime is 120011100043. The reversal of 120011100031 is 130001110021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130001110021 = 41 ⋅3170758781.

It is a cyclic number.

It is not a de Polignac number, because 120011100031 - 2³ = 120011100023 is a prime.

It is a super-2 number, since 2×120011100031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120011099990 and 120011100017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011100431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262032741 + ... + 262033198.

It is an arithmetic number, because the mean of its divisors is an integer number (30133791550).

Almost surely, 2^120011100031 is an apocalyptic number.

120011100031 is a deficient number, since it is larger than the sum of its proper divisors (524066169).

120011100031 is an equidigital number, since it uses as much as digits as its factorization.

120011100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524066168.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 120011100031 its reverse (130001110021), we get a palindrome (250012210052).

The spelling of 120011100031 in words is "one hundred twenty billion, eleven million, one hundred thousand, thirty-one".