2331201021 has 8 divisors (see below), whose sum is σ = 3192275424. Its totient is φ = 1512130320.

The previous prime is 2331201017. The next prime is 2331201049. The reversal of 2331201021 is 1201021332.

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

It is not a de Polignac number, because 2331201021 - 2² = 2331201017 is a prime.

It is a super-2 number, since 2×2331201021² = 10868996400622884882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331201091) 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, 10500795 + ... + 10501016.

It is an arithmetic number, because the mean of its divisors is an integer number (399034428).

Almost surely, 2^2331201021 is an apocalyptic number.

It is an amenable number.

2331201021 is a deficient number, since it is larger than the sum of its proper divisors (861074403).

2331201021 is a wasteful number, since it uses less digits than its factorization.

2331201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21001851.

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

The square root of 2331201021 is about 48282.5125796080. The cubic root of 2331201021 is about 1325.9482512695.

Adding to 2331201021 its reverse (1201021332), we get a palindrome (3532222353).

The spelling of 2331201021 in words is "two billion, three hundred thirty-one million, two hundred one thousand, twenty-one".