22243201402521 has 64 divisors (see below), whose sum is σ = 36898507514880. Its totient is φ = 11740433725440.

The previous prime is 22243201402489. The next prime is 22243201402529. The reversal of 22243201402521 is 12520410234222.

It is not a de Polignac number, because 22243201402521 - 2⁵ = 22243201402489 is a prime.

It is a super-2 number, since 2×22243201402521² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22243201402529) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23806780 + ... + 24723453.

It is an arithmetic number, because the mean of its divisors is an integer number (576539179920).

Almost surely, 2^{22243201402521} is an apocalyptic number.

It is an amenable number.

22243201402521 is a deficient number, since it is larger than the sum of its proper divisors (14655306112359).

22243201402521 is a wasteful number, since it uses less digits than its factorization.

22243201402521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48530326.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 22243201402521 its reverse (12520410234222), we get a palindrome (34763611636743).

The spelling of 22243201402521 in words is "twenty-two trillion, two hundred forty-three billion, two hundred one million, four hundred two thousand, five hundred twenty-one".