200121005719 has 2 divisors, whose sum is σ = 200121005720. Its totient is φ = 200121005718.

The previous prime is 200121005717. The next prime is 200121005753. The reversal of 200121005719 is 917500121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200121005719 - 2¹ = 200121005717 is a prime.

It is a super-2 number, since 2×200121005719² (a number of 23 digits) contains 22 as substring.

Together with 200121005717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121005717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060502859 + 100060502860.

It is an arithmetic number, because the mean of its divisors is an integer number (100060502860).

Almost surely, 2^200121005719 is an apocalyptic number.

200121005719 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121005719 is an equidigital number, since it uses as much as digits as its factorization.

200121005719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The spelling of 200121005719 in words is "two hundred billion, one hundred twenty-one million, five thousand, seven hundred nineteen".