2121232405215 has 32 divisors (see below), whose sum is σ = 4231445423616. Its totient is φ = 881551128960.

The previous prime is 2121232405189. The next prime is 2121232405297. The reversal of 2121232405215 is 5125042321212.

It is not a de Polignac number, because 2121232405215 - 2⁸ = 2121232404959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 918281272 + ... + 918283581.

It is an arithmetic number, because the mean of its divisors is an integer number (132232669488).

Almost surely, 2^{2121232405215} is an apocalyptic number.

2121232405215 is a deficient number, since it is larger than the sum of its proper divisors (2110213018401).

2121232405215 is a wasteful number, since it uses less digits than its factorization.

2121232405215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836564879.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 2121232405215 its reverse (5125042321212), we get a palindrome (7246274726427).

The spelling of 2121232405215 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-two million, four hundred five thousand, two hundred fifteen".