2312003111021 has 4 divisors (see below), whose sum is σ = 2368393430844. Its totient is φ = 2255612791200.

The previous prime is 2312003110999. The next prime is 2312003111063. The reversal of 2312003111021 is 1201113002132.

2312003111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1199528752900 + 1112474358121 = 1095230^2 + 1054739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312003111021 - 2³⁸ = 2037125204077 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 (2312003111071) 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, 28195159850 + ... + 28195159931.

It is an arithmetic number, because the mean of its divisors is an integer number (592098357711).

Almost surely, 2^{2312003111021} is an apocalyptic number.

It is an amenable number.

2312003111021 is a deficient number, since it is larger than the sum of its proper divisors (56390319823).

2312003111021 is an equidigital number, since it uses as much as digits as its factorization.

2312003111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56390319822.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2312003111021 its reverse (1201113002132), we get a palindrome (3513116113153).

The spelling of 2312003111021 in words is "two trillion, three hundred twelve billion, three million, one hundred eleven thousand, twenty-one".