1216106232 has 128 divisors (see below), whose sum is σ = 3555048960. Its totient is φ = 342904320.

The previous prime is 1216106231. The next prime is 1216106233. The reversal of 1216106232 is 2326016121.

It is an interprime number because it is at equal distance from previous prime (1216106231) and next prime (1216106233).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216106231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221958 + ... + 227370.

It is an arithmetic number, because the mean of its divisors is an integer number (27773820).

Almost surely, 2^1216106232 is an apocalyptic number.

1216106232 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 1216106232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777524480).

1216106232 is an abundant number, since it is smaller than the sum of its proper divisors (2338942728).

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

1216106232 is a wasteful number, since it uses less digits than its factorization.

1216106232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493 (or 5489 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1216106232 is about 34872.7147208244. The cubic root of 1216106232 is about 1067.3917407815.

The spelling of 1216106232 in words is "one billion, two hundred sixteen million, one hundred six thousand, two hundred thirty-two".