2121922385 has 32 divisors (see below), whose sum is σ = 2915066880. Its totient is φ = 1467716800.

The previous prime is 2121922321. The next prime is 2121922391. The reversal of 2121922385 is 5832291212.

It is not a de Polignac number, because 2121922385 - 2⁶ = 2121922321 is a prime.

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, 221750 + ... + 231120.

It is an arithmetic number, because the mean of its divisors is an integer number (91095840).

Almost surely, 2^2121922385 is an apocalyptic number.

It is an amenable number.

2121922385 is a deficient number, since it is larger than the sum of its proper divisors (793144495).

2121922385 is a wasteful number, since it uses less digits than its factorization.

2121922385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589.

The product of its digits is 17280, while the sum is 35.

The square root of 2121922385 is about 46064.3287696673. The cubic root of 2121922385 is about 1285.0198354723.

The spelling of 2121922385 in words is "two billion, one hundred twenty-one million, nine hundred twenty-two thousand, three hundred eighty-five".