1212120232 has 16 divisors (see below), whose sum is σ = 2275390260. Its totient is φ = 605349504.

The previous prime is 1212120223. The next prime is 1212120233. The reversal of 1212120232 is 2320212121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1211457636 + 662596 = 34806^2 + 814^2 .

It is not an unprimeable number, because it can be changed into a prime (1212120233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81543 + ... + 95254.

Almost surely, 2^1212120232 is an apocalyptic number.

It is an amenable number.

1212120232 is a deficient number, since it is larger than the sum of its proper divisors (1063270028).

1212120232 is a wasteful number, since it uses less digits than its factorization.

1212120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177660 (or 177656 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212120232 is about 34815.5171152175. The cubic root of 1212120232 is about 1066.2242768783.

Adding to 1212120232 its reverse (2320212121), we get a palindrome (3532332353).

The spelling of 1212120232 in words is "one billion, two hundred twelve million, one hundred twenty thousand, two hundred thirty-two".