21210123000151 has 2 divisors, whose sum is σ = 21210123000152. Its totient is φ = 21210123000150.

The previous prime is 21210123000109. The next prime is 21210123000161. The reversal of 21210123000151 is 15100032101212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21210123000151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210123000161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605061500075 + 10605061500076.

It is an arithmetic number, because the mean of its divisors is an integer number (10605061500076).

Almost surely, 2^{21210123000151} is an apocalyptic number.

21210123000151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210123000151 is an equidigital number, since it uses as much as digits as its factorization.

21210123000151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 21210123000151 its reverse (15100032101212), we get a palindrome (36310155101363).

The spelling of 21210123000151 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-three million, one hundred fifty-one", and thus it is an aban number.