22235510125221 has 16 divisors (see below), whose sum is σ = 29709367970880. Its totient is φ = 14792673029760.

The previous prime is 22235510125159. The next prime is 22235510125319. The reversal of 22235510125221 is 12252101553222.

It is not a de Polignac number, because 22235510125221 - 2¹¹ = 22235510123173 is a prime.

It is a super-2 number, since 2×22235510125221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22235510125421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7486945 + ... + 10026233.

It is an arithmetic number, because the mean of its divisors is an integer number (1856835498180).

Almost surely, 2^{22235510125221} is an apocalyptic number.

It is an amenable number.

22235510125221 is a deficient number, since it is larger than the sum of its proper divisors (7473857845659).

22235510125221 is a wasteful number, since it uses less digits than its factorization.

22235510125221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545396.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 22235510125221 its reverse (12252101553222), we get a palindrome (34487611678443).

The spelling of 22235510125221 in words is "twenty-two trillion, two hundred thirty-five billion, five hundred ten million, one hundred twenty-five thousand, two hundred twenty-one".