2103320021 has 8 divisors (see below), whose sum is σ = 2295540000. Its totient is φ = 1911268240.

The previous prime is 2103319993. The next prime is 2103320039. The reversal of 2103320021 is 1200233012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2103320021 - 2⁶ = 2103319957 is a prime.

It is a super-2 number, since 2×2103320021² = 8847910221478880882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103319978 and 2103320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103320071) 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, 15146 + ... + 66603.

It is an arithmetic number, because the mean of its divisors is an integer number (286942500).

Almost surely, 2^2103320021 is an apocalyptic number.

It is an amenable number.

2103320021 is a deficient number, since it is larger than the sum of its proper divisors (192219979).

2103320021 is a wasteful number, since it uses less digits than its factorization.

2103320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84099.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2103320021 is about 45861.9670424198. The cubic root of 2103320021 is about 1281.2536588244.

Adding to 2103320021 its reverse (1200233012), we get a palindrome (3303553033).

The spelling of 2103320021 in words is "two billion, one hundred three million, three hundred twenty thousand, twenty-one".