2123951912233 has 2 divisors, whose sum is σ = 2123951912234. Its totient is φ = 2123951912232.

The previous prime is 2123951912113. The next prime is 2123951912279. The reversal of 2123951912233 is 3322191593212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1516030737984 + 607921174249 = 1231272^2 + 779693^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123951912233 - 2²¹ = 2123949815081 is a prime.

It is a super-2 number, since 2×2123951912233² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123951912233.

It is not a weakly prime, because it can be changed into another prime (2123951952233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061975956116 + 1061975956117.

It is an arithmetic number, because the mean of its divisors is an integer number (1061975956117).

Almost surely, 2^{2123951912233} is an apocalyptic number.

It is an amenable number.

2123951912233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123951912233 is an equidigital number, since it uses as much as digits as its factorization.

2123951912233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The spelling of 2123951912233 in words is "two trillion, one hundred twenty-three billion, nine hundred fifty-one million, nine hundred twelve thousand, two hundred thirty-three".