202212009509 has 2 divisors, whose sum is σ = 202212009510. Its totient is φ = 202212009508.

The previous prime is 202212009499. The next prime is 202212009533. The reversal of 202212009509 is 905900212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108094973284 + 94117036225 = 328778^2 + 306785^2 .

It is a cyclic number.

It is not a de Polignac number, because 202212009509 - 2²⁰ = 202210960933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202212003509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101106004754 + 101106004755.

It is an arithmetic number, because the mean of its divisors is an integer number (101106004755).

Almost surely, 2^202212009509 is an apocalyptic number.

It is an amenable number.

202212009509 is a deficient number, since it is larger than the sum of its proper divisors (1).

202212009509 is an equidigital number, since it uses as much as digits as its factorization.

202212009509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 202212009509 in words is "two hundred two billion, two hundred twelve million, nine thousand, five hundred nine".