2101231332 has 144 divisors (see below), whose sum is σ = 5754333312. Its totient is φ = 644751360.

The previous prime is 2101231277. The next prime is 2101231333. The reversal of 2101231332 is 2331321012.

2101231332 is a `hidden beast` number, since 2 + 101 + 231 + 332 = 666.

It is a super-2 number, since 2×2101231332² = 8830346221156988448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2101231333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3277732 + ... + 3278372.

It is an arithmetic number, because the mean of its divisors is an integer number (39960648).

Almost surely, 2^2101231332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101231332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2877166656).

2101231332 is an abundant number, since it is smaller than the sum of its proper divisors (3653101980).

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

2101231332 is a wasteful number, since it uses less digits than its factorization.

2101231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2101231332 is about 45839.1899143080. The cubic root of 2101231332 is about 1280.8294046726.

Adding to 2101231332 its reverse (2331321012), we get a palindrome (4432552344).

The spelling of 2101231332 in words is "two billion, one hundred one million, two hundred thirty-one thousand, three hundred thirty-two".