1121223515 has 16 divisors (see below), whose sum is σ = 1380818880. Its totient is φ = 873492480.

The previous prime is 1121223463. The next prime is 1121223529. The reversal of 1121223515 is 5153221211.

It is not a de Polignac number, because 1121223515 - 2¹⁰ = 1121222491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113546 + ... + 123024.

It is an arithmetic number, because the mean of its divisors is an integer number (86301180).

Almost surely, 2^1121223515 is an apocalyptic number.

1121223515 is a deficient number, since it is larger than the sum of its proper divisors (259595365).

1121223515 is an equidigital number, since it uses as much as digits as its factorization.

1121223515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10102.

The product of its digits is 600, while the sum is 23.

The square root of 1121223515 is about 33484.6758234271. The cubic root of 1121223515 is about 1038.8768431321.

Adding to 1121223515 its reverse (5153221211), we get a palindrome (6274444726).

The spelling of 1121223515 in words is "one billion, one hundred twenty-one million, two hundred twenty-three thousand, five hundred fifteen".