22520515121 has 8 divisors (see below), whose sum is σ = 24261240360. Its totient is φ = 20780986752.

The previous prime is 22520515117. The next prime is 22520515133. The reversal of 22520515121 is 12151502522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3210355600 + 19310159521 = 56660^2 + 138961^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22520515121 - 2² = 22520515117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22520515321) 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, 259940 + ... + 335573.

It is an arithmetic number, because the mean of its divisors is an integer number (3032655045).

Almost surely, 2^22520515121 is an apocalyptic number.

It is an amenable number.

22520515121 is a deficient number, since it is larger than the sum of its proper divisors (1740725239).

22520515121 is a wasteful number, since it uses less digits than its factorization.

22520515121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598435.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 22520515121 in words is "twenty-two billion, five hundred twenty million, five hundred fifteen thousand, one hundred twenty-one".