200121220120279 has 2 divisors, whose sum is σ = 200121220120280. Its totient is φ = 200121220120278.

The previous prime is 200121220120259. The next prime is 200121220120357. The reversal of 200121220120279 is 972021022121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200121220120279 - 2²³ = 200121211731671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200121220120279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121220120259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060610060139 + 100060610060140.

It is an arithmetic number, because the mean of its divisors is an integer number (100060610060140).

Almost surely, 2^{200121220120279} is an apocalyptic number.

200121220120279 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121220120279 is an equidigital number, since it uses as much as digits as its factorization.

200121220120279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 200121220120279 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, two hundred seventy-nine".