22100002000021 has 8 divisors (see below), whose sum is σ = 24109132008384. Its totient is φ = 20090878477920.

The previous prime is 22100002000003. The next prime is 22100002000031. The reversal of 22100002000021 is 12000020000122.

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-22100002000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22100001999971 and 22100002000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100002000001) 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, 7968601 + ... + 10377793.

It is an arithmetic number, because the mean of its divisors is an integer number (3013641501048).

Almost surely, 2^{22100002000021} is an apocalyptic number.

It is an amenable number.

22100002000021 is a deficient number, since it is larger than the sum of its proper divisors (2009130008363).

22100002000021 is a wasteful number, since it uses less digits than its factorization.

22100002000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243131.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22100002000021 its reverse (12000020000122), we get a palindrome (34100022000143).

The spelling of 22100002000021 in words is "twenty-two trillion, one hundred billion, two million, twenty-one", and thus it is an aban number.