2121305322700 has 72 divisors (see below), whose sum is σ = 4608361594592. Its totient is φ = 847577364480.

The previous prime is 2121305322671. The next prime is 2121305322707. The reversal of 2121305322700 is 72235031212.

It is a super-2 number, since 2×2121305322700² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121305322707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 612561169 + ... + 612564631.

Almost surely, 2^{2121305322700} is an apocalyptic number.

2121305322700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121305322700 is an abundant number, since it is smaller than the sum of its proper divisors (2487056271892).

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

2121305322700 is a wasteful number, since it uses less digits than its factorization.

2121305322700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531 (or 8524 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 2121305322700 in words is "two trillion, one hundred twenty-one billion, three hundred five million, three hundred twenty-two thousand, seven hundred".