1121412251 has 2 divisors, whose sum is σ = 1121412252. Its totient is φ = 1121412250.

The previous prime is 1121412239. The next prime is 1121412263. The reversal of 1121412251 is 1522141211.

It is a balanced prime because it is at equal distance from previous prime (1121412239) and next prime (1121412263).

It is a cyclic number.

It is not a de Polignac number, because 1121412251 - 2²⁶ = 1054303387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1121412211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560706125 + 560706126.

It is an arithmetic number, because the mean of its divisors is an integer number (560706126).

Almost surely, 2^1121412251 is an apocalyptic number.

1121412251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121412251 is an equidigital number, since it uses as much as digits as its factorization.

1121412251 is an evil number, because the sum of its binary digits is even.

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

The square root of 1121412251 is about 33487.4939492342. The cubic root of 1121412251 is about 1038.9351313790.

Adding to 1121412251 its reverse (1522141211), we get a palindrome (2643553462).

The spelling of 1121412251 in words is "one billion, one hundred twenty-one million, four hundred twelve thousand, two hundred fifty-one".