21122783375973 has 8 divisors (see below), whose sum is σ = 28163848387200. Its totient is φ = 14081786974368.

The previous prime is 21122783375929. The next prime is 21122783375987. The reversal of 21122783375973 is 37957338722112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21122783375973 - 2⁶ = 21122783375909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122783375173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16429693 + ... + 17668626.

It is an arithmetic number, because the mean of its divisors is an integer number (3520481048400).

Almost surely, 2^{21122783375973} is an apocalyptic number.

It is an amenable number.

21122783375973 is a deficient number, since it is larger than the sum of its proper divisors (7041065011227).

21122783375973 is a wasteful number, since it uses less digits than its factorization.

21122783375973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34304811.

The product of its digits is 26671680, while the sum is 60.

The spelling of 21122783375973 in words is "twenty-one trillion, one hundred twenty-two billion, seven hundred eighty-three million, three hundred seventy-five thousand, nine hundred seventy-three".