2121221012023 has 2 divisors, whose sum is σ = 2121221012024. Its totient is φ = 2121221012022.

The previous prime is 2121221011969. The next prime is 2121221012033. The reversal of 2121221012023 is 3202101221212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121221012023 - 2²⁵ = 2121187457591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121221012033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060610506011 + 1060610506012.

It is an arithmetic number, because the mean of its divisors is an integer number (1060610506012).

Almost surely, 2^{2121221012023} is an apocalyptic number.

2121221012023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121221012023 is an equidigital number, since it uses as much as digits as its factorization.

2121221012023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2121221012023 its reverse (3202101221212), we get a palindrome (5323322233235).

The spelling of 2121221012023 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, twelve thousand, twenty-three".