1111223987 has 4 divisors (see below), whose sum is σ = 1169709480. Its totient is φ = 1052738496.

The previous prime is 1111223977. The next prime is 1111224019. The reversal of 1111223987 is 7893221111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7893221111 = 8573 ⋅920707.

It is a cyclic number.

It is not a de Polignac number, because 1111223987 - 2¹² = 1111219891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111223977) 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, 29242718 + ... + 29242755.

It is an arithmetic number, because the mean of its divisors is an integer number (292427370).

Almost surely, 2^1111223987 is an apocalyptic number.

1111223987 is a deficient number, since it is larger than the sum of its proper divisors (58485493).

1111223987 is an equidigital number, since it uses as much as digits as its factorization.

1111223987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58485492.

The product of its digits is 6048, while the sum is 35.

The square root of 1111223987 is about 33335.0264286681. The cubic root of 1111223987 is about 1035.7792406268.

The spelling of 1111223987 in words is "one billion, one hundred eleven million, two hundred twenty-three thousand, nine hundred eighty-seven".