2121403642124 has 48 divisors (see below), whose sum is σ = 4013116990848. Its totient is φ = 975417001728.

The previous prime is 2121403642087. The next prime is 2121403642133. The reversal of 2121403642124 is 4212463041212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45029309 + ... + 45076395.

It is an arithmetic number, because the mean of its divisors is an integer number (83606603976).

Almost surely, 2^{2121403642124} is an apocalyptic number.

It is an amenable number.

2121403642124 is a deficient number, since it is larger than the sum of its proper divisors (1891713348724).

2121403642124 is a wasteful number, since it uses less digits than its factorization.

2121403642124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50354 (or 50352 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 2121403642124 its reverse (4212463041212), we get a palindrome (6333866683336).

The spelling of 2121403642124 in words is "two trillion, one hundred twenty-one billion, four hundred three million, six hundred forty-two thousand, one hundred twenty-four".