1221133032001 has 8 divisors (see below), whose sum is σ = 1297416307680. Its totient is φ = 1146051067968.

The previous prime is 1221133031971. The next prime is 1221133032037. The reversal of 1221133032001 is 1002303311221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221133032001 - 2²⁵ = 1221099477569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221133032001.

It is not an unprimeable number, because it can be changed into a prime (1221133032601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300325816 + ... + 300329881.

It is an arithmetic number, because the mean of its divisors is an integer number (162177038460).

Almost surely, 2^{1221133032001} is an apocalyptic number.

It is an amenable number.

1221133032001 is a deficient number, since it is larger than the sum of its proper divisors (76283275679).

1221133032001 is a wasteful number, since it uses less digits than its factorization.

1221133032001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600655823.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1221133032001 its reverse (1002303311221), we get a palindrome (2223436343222).

The spelling of 1221133032001 in words is "one trillion, two hundred twenty-one billion, one hundred thirty-three million, thirty-two thousand, one".