1222252512 has 48 divisors (see below), whose sum is σ = 3455217360. Its totient is φ = 376077312.

The previous prime is 1222252483. The next prime is 1222252523. The reversal of 1222252512 is 2152522221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488437 + ... + 490932.

It is an arithmetic number, because the mean of its divisors is an integer number (71983695).

Almost surely, 2^1222252512 is an apocalyptic number.

1222252512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222252512 is an abundant number, since it is smaller than the sum of its proper divisors (2232964848).

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

1222252512 is a wasteful number, since it uses less digits than its factorization.

1222252512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979395 (or 979387 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 1222252512 is about 34960.7281388703. The cubic root of 1222252512 is about 1069.1869422440.

Adding to 1222252512 its reverse (2152522221), we get a palindrome (3374774733).

The spelling of 1222252512 in words is "one billion, two hundred twenty-two million, two hundred fifty-two thousand, five hundred twelve".