232220123212 has 216 divisors, whose sum is σ = 549655249920. Its totient is φ = 85292222400.

The previous prime is 232220123143. The next prime is 232220123237. The reversal of 232220123212 is 212321022232.

It is a super-2 number, since 2×232220123212² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 100483537 + ... + 100485847.

Almost surely, 2^232220123212 is an apocalyptic number.

232220123212 is a gapful number since it is divisible by the number (22) 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 232220123212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274827624960).

232220123212 is an abundant number, since it is smaller than the sum of its proper divisors (317435126708).

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

232220123212 is a wasteful number, since it uses less digits than its factorization.

232220123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 232220123212 its reverse (212321022232), we get a palindrome (444541145444).

The spelling of 232220123212 in words is "two hundred thirty-two billion, two hundred twenty million, one hundred twenty-three thousand, two hundred twelve".