21140122011985 has 8 divisors (see below), whose sum is σ = 25369926595776. Its totient is φ = 16910910822000.

The previous prime is 21140122011893. The next prime is 21140122012007. The reversal of 21140122011985 is 58911022104112.

It is a happy number.

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

It is not a de Polignac number, because 21140122011985 - 2¹⁵ = 21140121979217 is a prime.

It is a super-2 number, since 2×21140122011985² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148270069 + ... + 148412578.

It is an arithmetic number, because the mean of its divisors is an integer number (3171240824472).

Almost surely, 2^{21140122011985} is an apocalyptic number.

It is an amenable number.

21140122011985 is a deficient number, since it is larger than the sum of its proper divisors (4229804583791).

21140122011985 is a wasteful number, since it uses less digits than its factorization.

21140122011985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296696903.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 21140122011985 in words is "twenty-one trillion, one hundred forty billion, one hundred twenty-two million, eleven thousand, nine hundred eighty-five".