2101021220323 has 2 divisors, whose sum is σ = 2101021220324. Its totient is φ = 2101021220322.

The previous prime is 2101021220321. The next prime is 2101021220339. The reversal of 2101021220323 is 3230221201012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101021220323 - 2¹ = 2101021220321 is a prime.

Together with 2101021220321, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2101021220323.

It is not a weakly prime, because it can be changed into another prime (2101021220321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050510610161 + 1050510610162.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510610162).

Almost surely, 2^{2101021220323} is an apocalyptic number.

2101021220323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101021220323 is an equidigital number, since it uses as much as digits as its factorization.

2101021220323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2101021220323 its reverse (3230221201012), we get a palindrome (5331242421335).

The spelling of 2101021220323 in words is "two trillion, one hundred one billion, twenty-one million, two hundred twenty thousand, three hundred twenty-three".