101210202209 has 2 divisors, whose sum is σ = 101210202210. Its totient is φ = 101210202208.

The previous prime is 101210202199. The next prime is 101210202229. The reversal of 101210202209 is 902202012101.

It is a happy number.

It is an a-pointer prime, because the next prime (101210202229) can be obtained adding 101210202209 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93435371584 + 7774830625 = 305672^2 + 88175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101210202209 is a prime.

It is not a weakly prime, because it can be changed into another prime (101210202229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605101104 + 50605101105.

It is an arithmetic number, because the mean of its divisors is an integer number (50605101105).

Almost surely, 2^101210202209 is an apocalyptic number.

It is an amenable number.

101210202209 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210202209 is an equidigital number, since it uses as much as digits as its factorization.

101210202209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 101210202209 in words is "one hundred one billion, two hundred ten million, two hundred two thousand, two hundred nine".