1121252507 has 4 divisors (see below), whose sum is σ = 1170002640. Its totient is φ = 1072502376.

The previous prime is 1121252497. The next prime is 1121252513. The reversal of 1121252507 is 7052521211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121252507 - 2⁶ = 1121252443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121252537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24375032 + ... + 24375077.

It is an arithmetic number, because the mean of its divisors is an integer number (292500660).

Almost surely, 2^1121252507 is an apocalyptic number.

1121252507 is a deficient number, since it is larger than the sum of its proper divisors (48750133).

1121252507 is an equidigital number, since it uses as much as digits as its factorization.

1121252507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48750132.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1121252507 is about 33485.1087350780. The cubic root of 1121252507 is about 1038.8857972961.

Adding to 1121252507 its reverse (7052521211), we get a palindrome (8173773718).

The spelling of 1121252507 in words is "one billion, one hundred twenty-one million, two hundred fifty-two thousand, five hundred seven".