1121532215 has 16 divisors (see below), whose sum is σ = 1369061568. Its totient is φ = 881830656.

The previous prime is 1121532199. The next prime is 1121532221. The reversal of 1121532215 is 5122351211.

It is not a de Polignac number, because 1121532215 - 2⁴ = 1121532199 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 101702 + ... + 112188.

It is an arithmetic number, because the mean of its divisors is an integer number (85566348).

Almost surely, 2^1121532215 is an apocalyptic number.

1121532215 is a deficient number, since it is larger than the sum of its proper divisors (247529353).

1121532215 is a wasteful number, since it uses less digits than its factorization.

1121532215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10858.

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

The square root of 1121532215 is about 33489.2850774692. The cubic root of 1121532215 is about 1038.9721770387.

Adding to 1121532215 its reverse (5122351211), we get a palindrome (6243883426).

The spelling of 1121532215 in words is "one billion, one hundred twenty-one million, five hundred thirty-two thousand, two hundred fifteen".