1232210100 has 144 divisors (see below), whose sum is σ = 3928873536. Its totient is φ = 295680000.

The previous prime is 1232210081. The next prime is 1232210131. The reversal of 1232210100 is 10122321.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 331452 + ... + 335148.

It is an arithmetic number, because the mean of its divisors is an integer number (27283844).

Almost surely, 2^1232210100 is an apocalyptic number.

1232210100 is a gapful number since it is divisible by the number (10) 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 1232210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964436768).

1232210100 is an abundant number, since it is smaller than the sum of its proper divisors (2696663436).

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

1232210100 is a wasteful number, since it uses less digits than its factorization.

1232210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1232210100 is about 35102.8503116200. The cubic root of 1232210100 is about 1072.0826180571.

Adding to 1232210100 its reverse (10122321), we get a palindrome (1242332421).

It can be divided in two parts, 12322 and 10100, that added together give a palindrome (22422).

The spelling of 1232210100 in words is "one billion, two hundred thirty-two million, two hundred ten thousand, one hundred".