200021011212251 has 2 divisors, whose sum is σ = 200021011212252. Its totient is φ = 200021011212250.

The previous prime is 200021011212247. The next prime is 200021011212293. The reversal of 200021011212251 is 152212110120002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200021011212251 - 2² = 200021011212247 is a prime.

It is not a weakly prime, because it can be changed into another prime (200021011212751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010505606125 + 100010505606126.

It is an arithmetic number, because the mean of its divisors is an integer number (100010505606126).

Almost surely, 2^{200021011212251} is an apocalyptic number.

200021011212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021011212251 is an equidigital number, since it uses as much as digits as its factorization.

200021011212251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 200021011212251 its reverse (152212110120002), we get a palindrome (352233121332253).

The spelling of 200021011212251 in words is "two hundred trillion, twenty-one billion, eleven million, two hundred twelve thousand, two hundred fifty-one".