2120023321567 has 2 divisors, whose sum is σ = 2120023321568. Its totient is φ = 2120023321566.

The previous prime is 2120023321457. The next prime is 2120023321579. The reversal of 2120023321567 is 7651233200212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120023321567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120023321267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060011660783 + 1060011660784.

It is an arithmetic number, because the mean of its divisors is an integer number (1060011660784).

Almost surely, 2^{2120023321567} is an apocalyptic number.

2120023321567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120023321567 is an equidigital number, since it uses as much as digits as its factorization.

2120023321567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 2120023321567 its reverse (7651233200212), we get a palindrome (9771256521779).

The spelling of 2120023321567 in words is "two trillion, one hundred twenty billion, twenty-three million, three hundred twenty-one thousand, five hundred sixty-seven".