10200102021209 has 2 divisors, whose sum is σ = 10200102021210. Its totient is φ = 10200102021208.

The previous prime is 10200102021157. The next prime is 10200102021247. The reversal of 10200102021209 is 90212020100201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7834104308809 + 2365997712400 = 2798947^2 + 1538180^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200102021209 - 2³⁶ = 10131382544473 is a prime.

It is not a weakly prime, because it can be changed into another prime (10200102029209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100051010604 + 5100051010605.

It is an arithmetic number, because the mean of its divisors is an integer number (5100051010605).

Almost surely, 2^{10200102021209} is an apocalyptic number.

It is an amenable number.

10200102021209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200102021209 is an equidigital number, since it uses as much as digits as its factorization.

10200102021209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 10200102021209 in words is "ten trillion, two hundred billion, one hundred two million, twenty-one thousand, two hundred nine".