22517050021 has 8 divisors (see below), whose sum is σ = 22576748544. Its totient is φ = 22457411760.

The previous prime is 22517049983. The next prime is 22517050051. The reversal of 22517050021 is 12005071522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22517050021 is a prime.

It is a super-2 number, since 2×22517050021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22517050051) 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, 789276 + ... + 817306.

It is an arithmetic number, because the mean of its divisors is an integer number (2822093568).

Almost surely, 2^22517050021 is an apocalyptic number.

It is an amenable number.

22517050021 is a deficient number, since it is larger than the sum of its proper divisors (59698523).

22517050021 is a wasteful number, since it uses less digits than its factorization.

22517050021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30131.

The product of its (nonzero) digits is 1400, while the sum is 25.

The spelling of 22517050021 in words is "twenty-two billion, five hundred seventeen million, fifty thousand, twenty-one".