1321102244021 has 8 divisors (see below), whose sum is σ = 1509838744320. Its totient is φ = 1132367645808.

The previous prime is 1321102243973. The next prime is 1321102244027. The reversal of 1321102244021 is 1204422011231.

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

It is not a de Polignac number, because 1321102244021 - 2³⁸ = 1046224337077 is a prime.

It is a super-2 number, since 2×1321102244021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321102244027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640660 + ... + 2309538.

It is an arithmetic number, because the mean of its divisors is an integer number (188729843040).

Almost surely, 2^{1321102244021} is an apocalyptic number.

It is an amenable number.

1321102244021 is a deficient number, since it is larger than the sum of its proper divisors (188736500299).

1321102244021 is an equidigital number, since it uses as much as digits as its factorization.

1321102244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951043.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1321102244021 its reverse (1204422011231), we get a palindrome (2525524255252).

The spelling of 1321102244021 in words is "one trillion, three hundred twenty-one billion, one hundred two million, two hundred forty-four thousand, twenty-one".