10221115522 has 8 divisors (see below), whose sum is σ = 15333762636. Its totient is φ = 5109861312.

The previous prime is 10221115507. The next prime is 10221115543. The reversal of 10221115522 is 22551112201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9442203241 + 778912281 = 97171^2 + 27909^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 10221115493 and 10221115502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329683 + ... + 359350.

Almost surely, 2^10221115522 is an apocalyptic number.

10221115522 is a deficient number, since it is larger than the sum of its proper divisors (5112647114).

10221115522 is an equidigital number, since it uses as much as digits as its factorization.

10221115522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696452.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 10221115522 its reverse (22551112201), we get a palindrome (32772227723).

The spelling of 10221115522 in words is "ten billion, two hundred twenty-one million, one hundred fifteen thousand, five hundred twenty-two".