1320021102021 has 8 divisors (see below), whose sum is σ = 1836551098560. Its totient is φ = 841752586752.

The previous prime is 1320021102011. The next prime is 1320021102041. The reversal of 1320021102021 is 1202011200231.

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

It is not a de Polignac number, because 1320021102021 - 2¹⁰ = 1320021100997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320021102011) 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, 9565370236 + ... + 9565370373.

It is an arithmetic number, because the mean of its divisors is an integer number (229568887320).

Almost surely, 2^{1320021102021} is an apocalyptic number.

It is an amenable number.

1320021102021 is a deficient number, since it is larger than the sum of its proper divisors (516529996539).

1320021102021 is a wasteful number, since it uses less digits than its factorization.

1320021102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19130740635.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1320021102021 its reverse (1202011200231), we get a palindrome (2522032302252).

The spelling of 1320021102021 in words is "one trillion, three hundred twenty billion, twenty-one million, one hundred two thousand, twenty-one".