2123204419951 has 2 divisors, whose sum is σ = 2123204419952. Its totient is φ = 2123204419950.

The previous prime is 2123204419933. The next prime is 2123204420027. The reversal of 2123204419951 is 1599144023212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123204419951 - 2⁹ = 2123204419439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123204419898 and 2123204419907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123204417951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061602209975 + 1061602209976.

It is an arithmetic number, because the mean of its divisors is an integer number (1061602209976).

Almost surely, 2^{2123204419951} is an apocalyptic number.

2123204419951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123204419951 is an equidigital number, since it uses as much as digits as its factorization.

2123204419951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 2123204419951 in words is "two trillion, one hundred twenty-three billion, two hundred four million, four hundred nineteen thousand, nine hundred fifty-one".