2110303021021 has 4 divisors (see below), whose sum is σ = 2272634022652. Its totient is φ = 1947972019392.

The previous prime is 2110303020979. The next prime is 2110303021037. The reversal of 2110303021021 is 1201203030112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 605789805625 + 1504513215396 = 778325^2 + 1226586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110303021021 - 2⁹ = 2110303020509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110303020986 and 2110303021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110303021721) 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, 81165500796 + ... + 81165500821.

It is an arithmetic number, because the mean of its divisors is an integer number (568158505663).

Almost surely, 2^{2110303021021} is an apocalyptic number.

It is an amenable number.

2110303021021 is a deficient number, since it is larger than the sum of its proper divisors (162331001631).

2110303021021 is a wasteful number, since it uses less digits than its factorization.

2110303021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162331001630.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2110303021021 its reverse (1201203030112), we get a palindrome (3311506051133).

Subtracting from 2110303021021 its reverse (1201203030112), we obtain a palindrome (909099990909).

The spelling of 2110303021021 in words is "two trillion, one hundred ten billion, three hundred three million, twenty-one thousand, twenty-one".