13311221400021 has 8 divisors (see below), whose sum is σ = 17748602638560. Its totient is φ = 8873993880752.

The previous prime is 13311221400013. The next prime is 13311221400053. The reversal of 13311221400021 is 12000412211331.

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 13311221400021 - 2³ = 13311221400013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311221402021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38227611 + ... + 38574248.

It is an arithmetic number, because the mean of its divisors is an integer number (2218575329820).

Almost surely, 2^{13311221400021} is an apocalyptic number.

It is an amenable number.

13311221400021 is a deficient number, since it is larger than the sum of its proper divisors (4437381238539).

13311221400021 is an equidigital number, since it uses as much as digits as its factorization.

13311221400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76859635.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13311221400021 its reverse (12000412211331), we get a palindrome (25311633611352).

The spelling of 13311221400021 in words is "thirteen trillion, three hundred eleven billion, two hundred twenty-one million, four hundred thousand, twenty-one".