2121002332123 has 4 divisors (see below), whose sum is σ = 2213219824848. Its totient is φ = 2028784839400.

The previous prime is 2121002332103. The next prime is 2121002332153. The reversal of 2121002332123 is 3212332001212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121002332123 - 2⁹ = 2121002331611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121002332094 and 2121002332103.

It is not an unprimeable number, because it can be changed into a prime (2121002332103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46108746328 + ... + 46108746373.

It is an arithmetic number, because the mean of its divisors is an integer number (553304956212).

Almost surely, 2^{2121002332123} is an apocalyptic number.

2121002332123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121002332123 is a deficient number, since it is larger than the sum of its proper divisors (92217492725).

2121002332123 is an equidigital number, since it uses as much as digits as its factorization.

2121002332123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92217492724.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2121002332123 its reverse (3212332001212), we get a palindrome (5333334333335).

The spelling of 2121002332123 in words is "two trillion, one hundred twenty-one billion, two million, three hundred thirty-two thousand, one hundred twenty-three".