1120001251 has 2 divisors, whose sum is σ = 1120001252. Its totient is φ = 1120001250.

The previous prime is 1120001243. The next prime is 1120001273. The reversal of 1120001251 is 1521000211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1120001251 - 2³ = 1120001243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1120001291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560000625 + 560000626.

It is an arithmetic number, because the mean of its divisors is an integer number (560000626).

Almost surely, 2^1120001251 is an apocalyptic number.

1120001251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120001251 is an equidigital number, since it uses as much as digits as its factorization.

1120001251 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1120001251 is about 33466.4197517452. The cubic root of 1120001251 is about 1038.4992070254.

Adding to 1120001251 its reverse (1521000211), we get a palindrome (2641001462).

The spelling of 1120001251 in words is "one billion, one hundred twenty million, one thousand, two hundred fifty-one".