1121022506 has 4 divisors (see below), whose sum is σ = 1681533762. Its totient is φ = 560511252.

The previous prime is 1121022503. The next prime is 1121022563. The reversal of 1121022506 is 6052201211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6052201211 = 7 ⋅864600173.

It can be written as a sum of positive squares in only one way, i.e., 1045940281 + 75082225 = 32341^2 + 8665^2 .

It is not an unprimeable number, because it can be changed into a prime (1121022503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280255625 + ... + 280255628.

Almost surely, 2^1121022506 is an apocalyptic number.

1121022506 is a deficient number, since it is larger than the sum of its proper divisors (560511256).

1121022506 is an equidigital number, since it uses as much as digits as its factorization.

1121022506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560511255.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1121022506 is about 33481.6741815579. The cubic root of 1121022506 is about 1038.8147573621.

Adding to 1121022506 its reverse (6052201211), we get a palindrome (7173223717).

The spelling of 1121022506 in words is "one billion, one hundred twenty-one million, twenty-two thousand, five hundred six".