2121296949600 has 144 divisors (see below), whose sum is σ = 7065399160512. Its totient is φ = 552523829760.

The previous prime is 2121296949589. The next prime is 2121296949637. The reversal of 2121296949600 is 69496921212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10174402 + ... + 10380801.

It is an arithmetic number, because the mean of its divisors is an integer number (49065271948).

Almost surely, 2^{2121296949600} is an apocalyptic number.

2121296949600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121296949600 is an abundant number, since it is smaller than the sum of its proper divisors (4944102210912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121296949600 is a wasteful number, since it uses less digits than its factorization.

2121296949600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20555269 (or 20555256 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 2121296949600 in words is "two trillion, one hundred twenty-one billion, two hundred ninety-six million, nine hundred forty-nine thousand, six hundred".