1111211152 has 20 divisors (see below), whose sum is σ = 2155795180. Its totient is φ = 554876928.

The previous prime is 1111211119. The next prime is 1111211161. The reversal of 1111211152 is 2511121111.

It can be written as a sum of positive squares in 2 ways, for example, as 123743376 + 987467776 = 11124^2 + 31424^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32853 + ... + 57460.

It is an arithmetic number, because the mean of its divisors is an integer number (107789759).

Almost surely, 2^1111211152 is an apocalyptic number.

It is an amenable number.

1111211152 is a deficient number, since it is larger than the sum of its proper divisors (1044584028).

1111211152 is an equidigital number, since it uses as much as digits as its factorization.

1111211152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91090 (or 91084 counting only the distinct ones).

The product of its digits is 20, while the sum is 16.

The square root of 1111211152 is about 33334.8339128906. The cubic root of 1111211152 is about 1035.7752527486.

Adding to 1111211152 its reverse (2511121111), we get a palindrome (3622332263).

The spelling of 1111211152 in words is "one billion, one hundred eleven million, two hundred eleven thousand, one hundred fifty-two".