2111324323021 has 16 divisors (see below), whose sum is σ = 2237307473520. Its totient is φ = 1985540423680.

The previous prime is 2111324323013. The next prime is 2111324323061. The reversal of 2111324323021 is 1203234231112.

It can be written as a sum of positive squares in 8 ways, for example, as 165059375625 + 1946264947396 = 406275^2 + 1395086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111324323021 - 2³ = 2111324323013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111324323061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168940245 + ... + 168952741.

It is an arithmetic number, because the mean of its divisors is an integer number (139831717095).

Almost surely, 2^{2111324323021} is an apocalyptic number.

It is an amenable number.

2111324323021 is a deficient number, since it is larger than the sum of its proper divisors (125983150499).

2111324323021 is a wasteful number, since it uses less digits than its factorization.

2111324323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19664.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2111324323021 its reverse (1203234231112), we get a palindrome (3314558554133).

The spelling of 2111324323021 in words is "two trillion, one hundred eleven billion, three hundred twenty-four million, three hundred twenty-three thousand, twenty-one".