123020013211217 has 2 divisors, whose sum is σ = 123020013211218. Its totient is φ = 123020013211216.

The previous prime is 123020013211169. The next prime is 123020013211283. The reversal of 123020013211217 is 712112310020321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122572377280081 + 447635931136 = 11071241^2 + 669056^2 .

It is a cyclic number.

It is not a de Polignac number, because 123020013211217 - 2¹⁶ = 123020013145681 is a prime.

It is not a weakly prime, because it can be changed into another prime (123020013231217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510006605608 + 61510006605609.

It is an arithmetic number, because the mean of its divisors is an integer number (61510006605609).

Almost surely, 2^{123020013211217} is an apocalyptic number.

It is an amenable number.

123020013211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020013211217 is an equidigital number, since it uses as much as digits as its factorization.

123020013211217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 123020013211217 its reverse (712112310020321), we get a palindrome (835132323231538).

The spelling of 123020013211217 in words is "one hundred twenty-three trillion, twenty billion, thirteen million, two hundred eleven thousand, two hundred seventeen".