2110103131021 has 4 divisors (see below), whose sum is σ = 2110106052000. Its totient is φ = 2110100210044.

The previous prime is 2110103131009. The next prime is 2110103131067. The reversal of 2110103131021 is 1201313010112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2110103131021 - 2¹⁵ = 2110103098253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110103130986 and 2110103131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110103131921) 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, 503130 + ... + 2115028.

It is an arithmetic number, because the mean of its divisors is an integer number (527526513000).

Almost surely, 2^{2110103131021} is an apocalyptic number.

It is an amenable number.

2110103131021 is a deficient number, since it is larger than the sum of its proper divisors (2920979).

2110103131021 is a wasteful number, since it uses less digits than its factorization.

2110103131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920978.

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

Adding to 2110103131021 its reverse (1201313010112), we get a palindrome (3311416141133).

The spelling of 2110103131021 in words is "two trillion, one hundred ten billion, one hundred three million, one hundred thirty-one thousand, twenty-one".