20123411212951 has 2 divisors, whose sum is σ = 20123411212952. Its totient is φ = 20123411212950.

The previous prime is 20123411212889. The next prime is 20123411213027. The reversal of 20123411212951 is 15921211432102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123411212951 - 2⁹ = 20123411212439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123411212451) 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, 10061705606475 + 10061705606476.

It is an arithmetic number, because the mean of its divisors is an integer number (10061705606476).

Almost surely, 2^{20123411212951} is an apocalyptic number.

20123411212951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123411212951 is an equidigital number, since it uses as much as digits as its factorization.

20123411212951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 20123411212951 in words is "twenty trillion, one hundred twenty-three billion, four hundred eleven million, two hundred twelve thousand, nine hundred fifty-one".