1222421532 has 12 divisors (see below), whose sum is σ = 2852316936. Its totient is φ = 407473840.

The previous prime is 1222421513. The next prime is 1222421579. The reversal of 1222421532 is 2351242221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 50934219 + ... + 50934242.

It is an arithmetic number, because the mean of its divisors is an integer number (237693078).

Almost surely, 2^1222421532 is an apocalyptic number.

1222421532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222421532 is an abundant number, since it is smaller than the sum of its proper divisors (1629895404).

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

1222421532 is a wasteful number, since it uses less digits than its factorization.

1222421532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101868468 (or 101868466 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 1222421532 is about 34963.1453390567. The cubic root of 1222421532 is about 1069.2362243811.

Adding to 1222421532 its reverse (2351242221), we get a palindrome (3573663753).

The spelling of 1222421532 in words is "one billion, two hundred twenty-two million, four hundred twenty-one thousand, five hundred thirty-two".