1233211992 has 64 divisors (see below), whose sum is σ = 3207029760. Its totient is φ = 394742400.

The previous prime is 1233211963. The next prime is 1233212027. The reversal of 1233211992 is 2991123321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91138 + ... + 103790.

It is an arithmetic number, because the mean of its divisors is an integer number (50109840).

Almost surely, 2^1233211992 is an apocalyptic number.

1233211992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1233211992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603514880).

1233211992 is an abundant number, since it is smaller than the sum of its proper divisors (1973817768).

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

1233211992 is a wasteful number, since it uses less digits than its factorization.

1233211992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12824 (or 12820 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 1233211992 is about 35117.1182188972. The cubic root of 1233211992 is about 1072.3731042372.

The spelling of 1233211992 in words is "one billion, two hundred thirty-three million, two hundred eleven thousand, nine hundred ninety-two".