21064714106129 has 2 divisors, whose sum is σ = 21064714106130. Its totient is φ = 21064714106128.

The previous prime is 21064714106123. The next prime is 21064714106171. The reversal of 21064714106129 is 92160141746012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17319347369104 + 3745366737025 = 4161652^2 + 1935295^2 .

It is a cyclic number.

It is not a de Polignac number, because 21064714106129 - 2³² = 21060419138833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21064714106129.

It is not a weakly prime, because it can be changed into another prime (21064714106123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10532357053064 + 10532357053065.

It is an arithmetic number, because the mean of its divisors is an integer number (10532357053065).

Almost surely, 2^{21064714106129} is an apocalyptic number.

It is an amenable number.

21064714106129 is a deficient number, since it is larger than the sum of its proper divisors (1).

21064714106129 is an equidigital number, since it uses as much as digits as its factorization.

21064714106129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 21064714106129 in words is "twenty-one trillion, sixty-four billion, seven hundred fourteen million, one hundred six thousand, one hundred twenty-nine".