1221101332 has 12 divisors (see below), whose sum is σ = 2331193536. Its totient is φ = 555046040.

The previous prime is 1221101311. The next prime is 1221101353. The reversal of 1221101332 is 2331011221.

It is an interprime number because it is at equal distance from previous prime (1221101311) and next prime (1221101353).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13876108 + ... + 13876195.

It is an arithmetic number, because the mean of its divisors is an integer number (194266128).

Almost surely, 2^1221101332 is an apocalyptic number.

It is an amenable number.

1221101332 is a deficient number, since it is larger than the sum of its proper divisors (1110092204).

1221101332 is a wasteful number, since it uses less digits than its factorization.

1221101332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27752318 (or 27752316 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1221101332 is about 34944.2603584623. The cubic root of 1221101332 is about 1068.8511651350.

Adding to 1221101332 its reverse (2331011221), we get a palindrome (3552112553).

The spelling of 1221101332 in words is "one billion, two hundred twenty-one million, one hundred one thousand, three hundred thirty-two".