1222135215 has 96 divisors (see below), whose sum is σ = 2344697280. Its totient is φ = 541771776.

The previous prime is 1222135193. The next prime is 1222135237. The reversal of 1222135215 is 5125312221.

1222135215 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1222135193) and next prime (1222135237).

It is not a de Polignac number, because 1222135215 - 2⁹ = 1222134703 is a prime.

It is a super-2 number, since 2×1222135215² = 2987228967486192450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5336721 + ... + 5336949.

It is an arithmetic number, because the mean of its divisors is an integer number (24423930).

Almost surely, 2^1222135215 is an apocalyptic number.

1222135215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1222135215 is a deficient number, since it is larger than the sum of its proper divisors (1122562065).

1222135215 is a wasteful number, since it uses less digits than its factorization.

1222135215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 434 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1222135215 is about 34959.0505448875. The cubic root of 1222135215 is about 1069.1527386100.

Adding to 1222135215 its reverse (5125312221), we get a palindrome (6347447436).

The spelling of 1222135215 in words is "one billion, two hundred twenty-two million, one hundred thirty-five thousand, two hundred fifteen".