232222121220 has 96 divisors (see below), whose sum is σ = 661179931776. Its totient is φ = 60883200000.

The previous prime is 232222121189. The next prime is 232222121269. The reversal of 232222121220 is 22121222232.

It is a super-2 number, since 2×232222121220² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8833095 + ... + 8859345.

It is an arithmetic number, because the mean of its divisors is an integer number (6887290956).

Almost surely, 2^232222121220 is an apocalyptic number.

232222121220 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 232222121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330589965888).

232222121220 is an abundant number, since it is smaller than the sum of its proper divisors (428957810556).

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

232222121220 is a wasteful number, since it uses less digits than its factorization.

232222121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28741 (or 28739 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 232222121220 its reverse (22121222232), we get a palindrome (254343343452).

The spelling of 232222121220 in words is "two hundred thirty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty".