2101120031 has 8 divisors (see below), whose sum is σ = 2108260224. Its totient is φ = 2093992600.

The previous prime is 2101120027. The next prime is 2101120037. The reversal of 2101120031 is 1300211012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101120031 - 2² = 2101120027 is a prime.

It is a super-2 number, since 2×2101120031² = 8829410769338881922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101119994 and 2101120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101120037) 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, 413456 + ... + 418506.

It is an arithmetic number, because the mean of its divisors is an integer number (263532528).

Almost surely, 2^2101120031 is an apocalyptic number.

2101120031 is a deficient number, since it is larger than the sum of its proper divisors (7140193).

2101120031 is an equidigital number, since it uses as much as digits as its factorization.

2101120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2101120031 is about 45837.9758606333. The cubic root of 2101120031 is about 1280.8067893441.

Adding to 2101120031 its reverse (1300211012), we get a palindrome (3401331043).

The spelling of 2101120031 in words is "two billion, one hundred one million, one hundred twenty thousand, thirty-one".