102020211213209 has 2 divisors, whose sum is σ = 102020211213210. Its totient is φ = 102020211213208.

The previous prime is 102020211213191. The next prime is 102020211213227. The reversal of 102020211213209 is 902312112020201.

It is a balanced prime because it is at equal distance from previous prime (102020211213191) and next prime (102020211213227).

It can be written as a sum of positive squares in only one way, i.e., 101891803657609 + 128407555600 = 10094147^2 + 358340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020211213209 is a prime.

It is not a weakly prime, because it can be changed into another prime (102020211213289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010105606604 + 51010105606605.

It is an arithmetic number, because the mean of its divisors is an integer number (51010105606605).

Almost surely, 2^{102020211213209} is an apocalyptic number.

It is an amenable number.

102020211213209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020211213209 is an equidigital number, since it uses as much as digits as its factorization.

102020211213209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 102020211213209 in words is "one hundred two trillion, twenty billion, two hundred eleven million, two hundred thirteen thousand, two hundred nine".