1115022421 has 4 divisors (see below), whose sum is σ = 1153471500. Its totient is φ = 1076573344.

The previous prime is 1115022383. The next prime is 1115022449. The reversal of 1115022421 is 1242205111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 572644900 + 542377521 = 23930^2 + 23289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115022421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115022481) 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, 19224496 + ... + 19224553.

It is an arithmetic number, because the mean of its divisors is an integer number (288367875).

Almost surely, 2^1115022421 is an apocalyptic number.

It is an amenable number.

1115022421 is a deficient number, since it is larger than the sum of its proper divisors (38449079).

1115022421 is an equidigital number, since it uses as much as digits as its factorization.

1115022421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38449078.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1115022421 is about 33391.9514404295. The cubic root of 1115022421 is about 1036.9580802910.

Adding to 1115022421 its reverse (1242205111), we get a palindrome (2357227532).

The spelling of 1115022421 in words is "one billion, one hundred fifteen million, twenty-two thousand, four hundred twenty-one".