1145122215 has 16 divisors (see below), whose sum is σ = 1838094336. Its totient is φ = 608765600.

The previous prime is 1145122211. The next prime is 1145122219. The reversal of 1145122215 is 5122215411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1145122211) and next prime (1145122219).

It is not a de Polignac number, because 1145122215 - 2² = 1145122211 is a prime.

It is a super-2 number, since 2×1145122215² = 2622609774573012450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118071 + ... + 127400.

It is an arithmetic number, because the mean of its divisors is an integer number (114880896).

Almost surely, 2^1145122215 is an apocalyptic number.

1145122215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145122215 is a deficient number, since it is larger than the sum of its proper divisors (692972121).

1145122215 is a wasteful number, since it uses less digits than its factorization.

1145122215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245790.

The product of its digits is 800, while the sum is 24.

The square root of 1145122215 is about 33839.6544751864. The cubic root of 1145122215 is about 1046.2061772846.

Adding to 1145122215 its reverse (5122215411), we get a palindrome (6267337626).

The spelling of 1145122215 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, two hundred fifteen".