2121330130431 has 16 divisors (see below), whose sum is σ = 2868411875328. Its totient is φ = 1394236104800.

The previous prime is 2121330130429. The next prime is 2121330130463. The reversal of 2121330130431 is 1340310331212.

It is a cyclic number.

It is not a de Polignac number, because 2121330130431 - 2¹ = 2121330130429 is a prime.

It is a super-2 number, since 2×2121330130431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121330130411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4548226 + ... + 4992896.

It is an arithmetic number, because the mean of its divisors is an integer number (179275742208).

Almost surely, 2^{2121330130431} is an apocalyptic number.

2121330130431 is a deficient number, since it is larger than the sum of its proper divisors (747081744897).

2121330130431 is a wasteful number, since it uses less digits than its factorization.

2121330130431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467142.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2121330130431 its reverse (1340310331212), we get a palindrome (3461640461643).

The spelling of 2121330130431 in words is "two trillion, one hundred twenty-one billion, three hundred thirty million, one hundred thirty thousand, four hundred thirty-one".