1232212220 has 12 divisors (see below), whose sum is σ = 2587645704. Its totient is φ = 492884880.

The previous prime is 1232212199. The next prime is 1232212249. The reversal of 1232212220 is 222122321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30805286 + ... + 30805325.

It is an arithmetic number, because the mean of its divisors is an integer number (215637142).

Almost surely, 2^1232212220 is an apocalyptic number.

1232212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232212220 is an abundant number, since it is smaller than the sum of its proper divisors (1355433484).

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

1232212220 is a wasteful number, since it uses less digits than its factorization.

1232212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61610620 (or 61610618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1232212220 is about 35102.8805085850. The cubic root of 1232212220 is about 1072.0832328910.

Adding to 1232212220 its reverse (222122321), we get a palindrome (1454334541).

It can be divided in two parts, 12322 and 12220, that added together give a palindrome (24542).

The spelling of 1232212220 in words is "one billion, two hundred thirty-two million, two hundred twelve thousand, two hundred twenty".