2232121100 has 72 divisors (see below), whose sum is σ = 5294327808. Its totient is φ = 810100800.

The previous prime is 2232121093. The next prime is 2232121153. The reversal of 2232121100 is 11212322.

It is a happy number.

It is a super-3 number, since 3×2232121100³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 666029 + ... + 669371.

Almost surely, 2^2232121100 is an apocalyptic number.

2232121100 is a gapful number since it is divisible by the number (20) 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 2232121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2647163904).

2232121100 is an abundant number, since it is smaller than the sum of its proper divisors (3062206708).

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

2232121100 is a wasteful number, since it uses less digits than its factorization.

2232121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3968 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2232121100 is about 47245.3288696354. The cubic root of 2232121100 is about 1306.8906502343.

Adding to 2232121100 its reverse (11212322), we get a palindrome (2243333422).

The spelling of 2232121100 in words is "two billion, two hundred thirty-two million, one hundred twenty-one thousand, one hundred".