2123326960021 has 4 divisors (see below), whose sum is σ = 2136353505952. Its totient is φ = 2110300414092.

The previous prime is 2123326960009. The next prime is 2123326960091. The reversal of 2123326960021 is 1200696233212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2123326960021 - 2⁷ = 2123326959893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123326960091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6513272721 + ... + 6513273046.

It is an arithmetic number, because the mean of its divisors is an integer number (534088376488).

Almost surely, 2^{2123326960021} is an apocalyptic number.

It is an amenable number.

2123326960021 is a deficient number, since it is larger than the sum of its proper divisors (13026545931).

2123326960021 is a wasteful number, since it uses less digits than its factorization.

2123326960021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026545930.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 2123326960021 in words is "two trillion, one hundred twenty-three billion, three hundred twenty-six million, nine hundred sixty thousand, twenty-one".