1320441122021 has 16 divisors (see below), whose sum is σ = 1588670505600. Its totient is φ = 1072123216128.

The previous prime is 1320441121933. The next prime is 1320441122029. The reversal of 1320441122021 is 1202211440231.

It is a cyclic number.

It is not a de Polignac number, because 1320441122021 - 2²² = 1320436927717 is a prime.

It is a super-2 number, since 2×1320441122021² (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 (1320441122029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728345 + ... + 1780833.

It is an arithmetic number, because the mean of its divisors is an integer number (99291906600).

Almost surely, 2^{1320441122021} is an apocalyptic number.

It is an amenable number.

1320441122021 is a deficient number, since it is larger than the sum of its proper divisors (268229383579).

1320441122021 is a wasteful number, since it uses less digits than its factorization.

1320441122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061948.

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

Adding to 1320441122021 its reverse (1202211440231), we get a palindrome (2522652562252).

The spelling of 1320441122021 in words is "one trillion, three hundred twenty billion, four hundred forty-one million, one hundred twenty-two thousand, twenty-one".