2131330121 has 8 divisors (see below), whose sum is σ = 2238926400. Its totient is φ = 2024978032.

The previous prime is 2131330109. The next prime is 2131330133. The reversal of 2131330121 is 1210331312.

It is an interprime number because it is at equal distance from previous prime (2131330109) and next prime (2131330133).

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 2131330121 - 2²² = 2127135817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131330121.

It is not an unprimeable number, because it can be changed into a prime (2131330151) 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, 307535 + ... + 314388.

It is an arithmetic number, because the mean of its divisors is an integer number (279865800).

Almost surely, 2^2131330121 is an apocalyptic number.

It is an amenable number.

2131330121 is a deficient number, since it is larger than the sum of its proper divisors (107596279).

2131330121 is a wasteful number, since it uses less digits than its factorization.

2131330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622095.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2131330121 is about 46166.3310324743. The cubic root of 2131330121 is about 1286.9161199055.

Adding to 2131330121 its reverse (1210331312), we get a palindrome (3341661433).

The spelling of 2131330121 in words is "two billion, one hundred thirty-one million, three hundred thirty thousand, one hundred twenty-one".