22142005522521 has 16 divisors (see below), whose sum is σ = 29527919127936. Its totient is φ = 14758714741376.

The previous prime is 22142005522517. The next prime is 22142005522537. The reversal of 22142005522521 is 12522550024122.

It is a cyclic number.

It is not a de Polignac number, because 22142005522521 - 2² = 22142005522517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22142005522541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532969276 + ... + 533010818.

It is an arithmetic number, because the mean of its divisors is an integer number (1845494945496).

Almost surely, 2^{22142005522521} is an apocalyptic number.

It is an amenable number.

22142005522521 is a deficient number, since it is larger than the sum of its proper divisors (7385913605415).

22142005522521 is a wasteful number, since it uses less digits than its factorization.

22142005522521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68832.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 22142005522521 its reverse (12522550024122), we get a palindrome (34664555546643).

The spelling of 22142005522521 in words is "twenty-two trillion, one hundred forty-two billion, five million, five hundred twenty-two thousand, five hundred twenty-one".