1221838932 has 24 divisors (see below), whose sum is σ = 2853222400. Its totient is φ = 406956096.

The previous prime is 1221838921. The next prime is 1221838939. The reversal of 1221838932 is 2398381221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221838939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24457 + ... + 55152.

Almost surely, 2^1221838932 is an apocalyptic number.

1221838932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221838932 is an abundant number, since it is smaller than the sum of its proper divisors (1631383468).

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

1221838932 is a wasteful number, since it uses less digits than its factorization.

1221838932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80895 (or 80893 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 1221838932 is about 34954.8127158479. The cubic root of 1221838932 is about 1069.0663331728.

The spelling of 1221838932 in words is "one billion, two hundred twenty-one million, eight hundred thirty-eight thousand, nine hundred thirty-two".