1222015120 has 40 divisors (see below), whose sum is σ = 2848674816. Its totient is φ = 487517568.

The previous prime is 1222015061. The next prime is 1222015129. The reversal of 1222015120 is 215102221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1222015120² = 2986641907017228800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1222015094 and 1222015103.

It is not an unprimeable number, because it can be changed into a prime (1222015129) 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 7 ways as a sum of consecutive naturals, for example, 10699 + ... + 50581.

Almost surely, 2^1222015120 is an apocalyptic number.

1222015120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222015120 is an abundant number, since it is smaller than the sum of its proper divisors (1626659696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222015120 is a wasteful number, since it uses less digits than its factorization.

1222015120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40279 (or 40273 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1222015120 is about 34957.3328502047. The cubic root of 1222015120 is about 1069.1177168157.

Adding to 1222015120 its reverse (215102221), we get a palindrome (1437117341).

The spelling of 1222015120 in words is "one billion, two hundred twenty-two million, fifteen thousand, one hundred twenty".