1320210301021 has 2 divisors, whose sum is σ = 1320210301022. Its totient is φ = 1320210301020.

The previous prime is 1320210301009. The next prime is 1320210301043. The reversal of 1320210301021 is 1201030120231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1316974284025 + 3236016996 = 1147595^2 + 56886^2 .

It is an emirp because it is prime and its reverse (1201030120231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320210301021 - 2²¹ = 1320208203869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320210300986 and 1320210301004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320210307021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660105150510 + 660105150511.

It is an arithmetic number, because the mean of its divisors is an integer number (660105150511).

Almost surely, 2^{1320210301021} is an apocalyptic number.

It is an amenable number.

1320210301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320210301021 is an equidigital number, since it uses as much as digits as its factorization.

1320210301021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1320210301021 its reverse (1201030120231), we get a palindrome (2521240421252).

The spelling of 1320210301021 in words is "one trillion, three hundred twenty billion, two hundred ten million, three hundred one thousand, twenty-one".