2121232332123 has 72 divisors (see below), whose sum is σ = 3436187292720. Its totient is φ = 1306023808320.

The previous prime is 2121232332101. The next prime is 2121232332139. The reversal of 2121232332123 is 3212332321212.

2121232332123 is a `hidden beast` number, since 2 + 1 + 2 + 12 + 323 + 321 + 2 + 3 = 666.

It is not a de Polignac number, because 2121232332123 - 2³² = 2116937364827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2121232332173) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3443353 + ... + 4012373.

It is an arithmetic number, because the mean of its divisors is an integer number (47724823510).

Almost surely, 2^{2121232332123} is an apocalyptic number.

2121232332123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121232332123 is a deficient number, since it is larger than the sum of its proper divisors (1314954960597).

2121232332123 is an equidigital number, since it uses as much as digits as its factorization.

2121232332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569111 (or 569076 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 2121232332123 its reverse (3212332321212), we get a palindrome (5333564653335).

The spelling of 2121232332123 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-two million, three hundred thirty-two thousand, one hundred twenty-three".