2103312021 has 8 divisors (see below), whose sum is σ = 2804820000. Its totient is φ = 1402006032.

The previous prime is 2103312017. The next prime is 2103312031. The reversal of 2103312021 is 1202133012.

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

It is not a de Polignac number, because 2103312021 - 2² = 2103312017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103312011) 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, 24250 + ... + 69243.

It is an arithmetic number, because the mean of its divisors is an integer number (350602500).

Almost surely, 2^2103312021 is an apocalyptic number.

It is an amenable number.

2103312021 is a deficient number, since it is larger than the sum of its proper divisors (701507979).

2103312021 is an equidigital number, since it uses as much as digits as its factorization.

2103312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100995.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2103312021 is about 45861.8798240979. The cubic root of 2103312021 is about 1281.2520344017.

Adding to 2103312021 its reverse (1202133012), we get a palindrome (3305445033).

The spelling of 2103312021 in words is "two billion, one hundred three million, three hundred twelve thousand, twenty-one".