201200021251 has 2 divisors, whose sum is σ = 201200021252. Its totient is φ = 201200021250.

The previous prime is 201200021221. The next prime is 201200021279. The reversal of 201200021251 is 152120002102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201200021251 - 2⁷ = 201200021123 is a prime.

It is not a weakly prime, because it can be changed into another prime (201200021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600010625 + 100600010626.

It is an arithmetic number, because the mean of its divisors is an integer number (100600010626).

Almost surely, 2^201200021251 is an apocalyptic number.

201200021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200021251 is an equidigital number, since it uses as much as digits as its factorization.

201200021251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 201200021251 its reverse (152120002102), we get a palindrome (353320023353).

The spelling of 201200021251 in words is "two hundred one billion, two hundred million, twenty-one thousand, two hundred fifty-one".