2121404140331 has 8 divisors (see below), whose sum is σ = 2567077279200. Its totient is φ = 1711384852608.

The previous prime is 2121404140319. The next prime is 2121404140357. The reversal of 2121404140331 is 1330414041212.

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 2121404140331 - 2⁶ = 2121404140267 is a prime.

It is a super-2 number, since 2×2121404140331² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121404140331.

It is not an unprimeable number, because it can be changed into a prime (2121404140391) 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, 8913462656 + ... + 8913462893.

It is an arithmetic number, because the mean of its divisors is an integer number (320884659900).

Almost surely, 2^{2121404140331} is an apocalyptic number.

2121404140331 is a deficient number, since it is larger than the sum of its proper divisors (445673138869).

2121404140331 is a wasteful number, since it uses less digits than its factorization.

2121404140331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826925573.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 2121404140331 its reverse (1330414041212), we get a palindrome (3451818181543).

The spelling of 2121404140331 in words is "two trillion, one hundred twenty-one billion, four hundred four million, one hundred forty thousand, three hundred thirty-one".