12211512522 has 64 divisors (see below), whose sum is σ = 28484711424. Its totient is φ = 3448938240.

The previous prime is 12211512517. The next prime is 12211512557. The reversal of 12211512522 is 22521511221.

It is a junction number, because it is equal to n+sod(n) for n = 12211512492 and 12211512501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62733 + ... + 168399.

It is an arithmetic number, because the mean of its divisors is an integer number (445073616).

Almost surely, 2^12211512522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211512522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14242355712).

12211512522 is an abundant number, since it is smaller than the sum of its proper divisors (16273198902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211512522 is a wasteful number, since it uses less digits than its factorization.

12211512522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105803.

The product of its digits is 800, while the sum is 24.

The spelling of 12211512522 in words is "twelve billion, two hundred eleven million, five hundred twelve thousand, five hundred twenty-two".