1221823932 has 48 divisors (see below), whose sum is σ = 3449859840. Its totient is φ = 328557312.

The previous prime is 1221823927. The next prime is 1221823943. The reversal of 1221823932 is 2393281221.

It is a junction number, because it is equal to n+sod(n) for n = 1221823893 and 1221823902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426382 + ... + 429237.

It is an arithmetic number, because the mean of its divisors is an integer number (71872080).

Almost surely, 2^1221823932 is an apocalyptic number.

1221823932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221823932 is an abundant number, since it is smaller than the sum of its proper divisors (2228035908).

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

1221823932 is a wasteful number, since it uses less digits than its factorization.

1221823932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855650 (or 855648 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 1221823932 is about 34954.5981524606. The cubic root of 1221823932 is about 1069.0619583298.

The spelling of 1221823932 in words is "one billion, two hundred twenty-one million, eight hundred twenty-three thousand, nine hundred thirty-two".