22202215506 has 112 divisors (see below), whose sum is σ = 51055446528. Its totient is φ = 7235762400.

The previous prime is 22202215501. The next prime is 22202215513. The reversal of 22202215506 is 60551220222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 22202215506.

It is not an unprimeable number, because it can be changed into a prime (22202215501) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 16986505 + ... + 16987811.

Almost surely, 2^22202215506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22202215506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25527723264).

22202215506 is an abundant number, since it is smaller than the sum of its proper divisors (28853231022).

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

22202215506 is a wasteful number, since it uses less digits than its factorization.

22202215506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 22202215506 its reverse (60551220222), we get a palindrome (82753435728).

The spelling of 22202215506 in words is "twenty-two billion, two hundred two million, two hundred fifteen thousand, five hundred six".