1211220232 has 16 divisors (see below), whose sum is σ = 2274557760. Its totient is φ = 604671504.

The previous prime is 1211220223. The next prime is 1211220239. The reversal of 1211220232 is 2320221121.

It is a happy number.

It is a super-2 number, since 2×1211220232² = 2934108900812267648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211220239) 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, 111828 + ... + 122179.

It is an arithmetic number, because the mean of its divisors is an integer number (142159860).

Almost surely, 2^1211220232 is an apocalyptic number.

It is an amenable number.

1211220232 is a deficient number, since it is larger than the sum of its proper divisors (1063337528).

1211220232 is a wasteful number, since it uses less digits than its factorization.

1211220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234660 (or 234656 counting only the distinct ones).

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

The square root of 1211220232 is about 34802.5894438905. The cubic root of 1211220232 is about 1065.9603208164.

Adding to 1211220232 its reverse (2320221121), we get a palindrome (3531441353).

The spelling of 1211220232 in words is "one billion, two hundred eleven million, two hundred twenty thousand, two hundred thirty-two".