1212023115 has 16 divisors (see below), whose sum is σ = 2154708000. Its totient is φ = 646412256.

The previous prime is 1212023083. The next prime is 1212023123. The reversal of 1212023115 is 5113202121.

It is not a de Polignac number, because 1212023115 - 2⁵ = 1212023083 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, 4488840 + ... + 4489109.

It is an arithmetic number, because the mean of its divisors is an integer number (134669250).

Almost surely, 2^1212023115 is an apocalyptic number.

1212023115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1212023115 is a deficient number, since it is larger than the sum of its proper divisors (942684885).

1212023115 is an equidigital number, since it uses as much as digits as its factorization.

1212023115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977963 (or 8977957 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1212023115 is about 34814.1223499889. The cubic root of 1212023115 is about 1066.1958002564.

Adding to 1212023115 its reverse (5113202121), we get a palindrome (6325225236).

The spelling of 1212023115 in words is "one billion, two hundred twelve million, twenty-three thousand, one hundred fifteen".