21885920118237 has 8 divisors (see below), whose sum is σ = 33349973513536. Its totient is φ = 12506240067552.

The previous prime is 21885920118199. The next prime is 21885920118269. The reversal of 21885920118237 is 73281102958812.

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

It is not a de Polignac number, because 21885920118237 - 2¹⁸ = 21885919856093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21885920138237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521093336128 + ... + 521093336169.

It is an arithmetic number, because the mean of its divisors is an integer number (4168746689192).

Almost surely, 2^{21885920118237} is an apocalyptic number.

It is an amenable number.

21885920118237 is a deficient number, since it is larger than the sum of its proper divisors (11464053395299).

21885920118237 is a wasteful number, since it uses less digits than its factorization.

21885920118237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042186672307.

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 21885920118237 in words is "twenty-one trillion, eight hundred eighty-five billion, nine hundred twenty million, one hundred eighteen thousand, two hundred thirty-seven".