201100001251 has 2 divisors, whose sum is σ = 201100001252. Its totient is φ = 201100001250.

The previous prime is 201100001183. The next prime is 201100001273. The reversal of 201100001251 is 152100001102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201100001251 is a prime.

It is not a weakly prime, because it can be changed into another prime (201100701251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550000625 + 100550000626.

It is an arithmetic number, because the mean of its divisors is an integer number (100550000626).

Almost surely, 2^201100001251 is an apocalyptic number.

201100001251 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100001251 is an equidigital number, since it uses as much as digits as its factorization.

201100001251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 13.

Adding to 201100001251 its reverse (152100001102), we get a palindrome (353200002353).

The spelling of 201100001251 in words is "two hundred one billion, one hundred million, one thousand, two hundred fifty-one".