1222422152 has 128 divisors (see below), whose sum is σ = 2881440000. Its totient is φ = 474356736.

The previous prime is 1222422137. The next prime is 1222422199. The reversal of 1222422152 is 2512242221.

It is a super-2 number, since 2×1222422152² = 2988631835400622208, which contains 22 as substring.

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, 5337974 + ... + 5338202.

It is an arithmetic number, because the mean of its divisors is an integer number (22511250).

Almost surely, 2^1222422152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222422152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440720000).

1222422152 is an abundant number, since it is smaller than the sum of its proper divisors (1659017848).

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

1222422152 is a wasteful number, since it uses less digits than its factorization.

1222422152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 459 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 1222422152 is about 34963.1542055347. The cubic root of 1222422152 is about 1069.2364051497.

Adding to 1222422152 its reverse (2512242221), we get a palindrome (3734664373).

The spelling of 1222422152 in words is "one billion, two hundred twenty-two million, four hundred twenty-two thousand, one hundred fifty-two".