202123013320009 has 2 divisors, whose sum is σ = 202123013320010. Its totient is φ = 202123013320008.

The previous prime is 202123013319949. The next prime is 202123013320051. The reversal of 202123013320009 is 900023310321202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130794904633600 + 71328108686409 = 11436560^2 + 8445597^2 .

It is a cyclic number.

It is not a de Polignac number, because 202123013320009 - 2¹⁵ = 202123013287241 is a prime.

It is not a weakly prime, because it can be changed into another prime (202123014320009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061506660004 + 101061506660005.

It is an arithmetic number, because the mean of its divisors is an integer number (101061506660005).

Almost surely, 2^{202123013320009} is an apocalyptic number.

It is an amenable number.

202123013320009 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123013320009 is an equidigital number, since it uses as much as digits as its factorization.

202123013320009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 202123013320009 in words is "two hundred two trillion, one hundred twenty-three billion, thirteen million, three hundred twenty thousand, nine".