1320131100021 has 8 divisors (see below), whose sum is σ = 1765908269664. Its totient is φ = 877220665200.

The previous prime is 1320131100007. The next prime is 1320131100103. The reversal of 1320131100021 is 1200011310231.

It is a happy number.

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

It is not a de Polignac number, because 1320131100021 - 2⁶ = 1320131099957 is a prime.

It is a super-2 number, since 2×1320131100021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320131104021) 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, 716682630 + ... + 716684471.

It is an arithmetic number, because the mean of its divisors is an integer number (220738533708).

Almost surely, 2^{1320131100021} is an apocalyptic number.

It is an amenable number.

1320131100021 is a deficient number, since it is larger than the sum of its proper divisors (445777169643).

1320131100021 is a wasteful number, since it uses less digits than its factorization.

1320131100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433367411.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1320131100021 its reverse (1200011310231), we get a palindrome (2520142410252).

The spelling of 1320131100021 in words is "one trillion, three hundred twenty billion, one hundred thirty-one million, one hundred thousand, twenty-one".