1211220332 has 24 divisors (see below), whose sum is σ = 2443884576. Its totient is φ = 514499328.

The previous prime is 1211220323. The next prime is 1211220347. The reversal of 1211220332 is 2330221121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211220332.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188243 + ... + 194570.

It is an arithmetic number, because the mean of its divisors is an integer number (101828524).

Almost surely, 2^1211220332 is an apocalyptic number.

It is an amenable number.

1211220332 is an abundant number, since it is smaller than the sum of its proper divisors (1232664244).

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

1211220332 is a wasteful number, since it uses less digits than its factorization.

1211220332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382937 (or 382935 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1211220332 is about 34802.5908805652. The cubic root of 1211220332 is about 1065.9603501521.

Adding to 1211220332 its reverse (2330221121), we get a palindrome (3541441453).

The spelling of 1211220332 in words is "one billion, two hundred eleven million, two hundred twenty thousand, three hundred thirty-two".