1221023332 has 12 divisors (see below), whose sum is σ = 2137178736. Its totient is φ = 610400840.

The previous prime is 1221023327. The next prime is 1221023357. The reversal of 1221023332 is 2333201221.

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, 207 + ... + 49417.

It is an arithmetic number, because the mean of its divisors is an integer number (178098228).

Almost surely, 2^1221023332 is an apocalyptic number.

It is an amenable number.

1221023332 is a deficient number, since it is larger than the sum of its proper divisors (916155404).

1221023332 is a wasteful number, since it uses less digits than its factorization.

1221023332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55418 (or 55416 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1221023332 is about 34943.1442775260. The cubic root of 1221023332 is about 1068.8284063996.

Adding to 1221023332 its reverse (2333201221), we get a palindrome (3554224553).

The spelling of 1221023332 in words is "one billion, two hundred twenty-one million, twenty-three thousand, three hundred thirty-two".