1162212251 has 4 divisors (see below), whose sum is σ = 1162339104. Its totient is φ = 1162085400.

The previous prime is 1162212239. The next prime is 1162212257. The reversal of 1162212251 is 1522122611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1522122611 = 479 ⋅3177709.

It is a cyclic number.

It is not a de Polignac number, because 1162212251 - 2³⁰ = 88470427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1162212257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48515 + ... + 68396.

It is an arithmetic number, because the mean of its divisors is an integer number (290584776).

Almost surely, 2^1162212251 is an apocalyptic number.

1162212251 is a deficient number, since it is larger than the sum of its proper divisors (126853).

1162212251 is an equidigital number, since it uses as much as digits as its factorization.

1162212251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126852.

The product of its digits is 480, while the sum is 23.

The square root of 1162212251 is about 34091.2342252374. The cubic root of 1162212251 is about 1051.3850960230.

Adding to 1162212251 its reverse (1522122611), we get a palindrome (2684334862).

The spelling of 1162212251 in words is "one billion, one hundred sixty-two million, two hundred twelve thousand, two hundred fifty-one".