2121534304131 has 8 divisors (see below), whose sum is σ = 3085868078784. Its totient is φ = 1285778366120.

The previous prime is 2121534304117. The next prime is 2121534304133. The reversal of 2121534304131 is 1314034351212.

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 2121534304131 - 2¹⁸ = 2121534041987 is a prime.

It is a super-2 number, since 2×2121534304131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121534304133) 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, 32144459121 + ... + 32144459186.

It is an arithmetic number, because the mean of its divisors is an integer number (385733509848).

Almost surely, 2^{2121534304131} is an apocalyptic number.

2121534304131 is a deficient number, since it is larger than the sum of its proper divisors (964333774653).

2121534304131 is a wasteful number, since it uses less digits than its factorization.

2121534304131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64288918321.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 2121534304131 its reverse (1314034351212), we get a palindrome (3435568655343).

The spelling of 2121534304131 in words is "two trillion, one hundred twenty-one billion, five hundred thirty-four million, three hundred four thousand, one hundred thirty-one".