1122520215 has 32 divisors (see below), whose sum is σ = 1817625600. Its totient is φ = 591523200.

The previous prime is 1122520193. The next prime is 1122520219. The reversal of 1122520215 is 5120252211.

It is not a de Polignac number, because 1122520215 - 2¹⁵ = 1122487447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122520191 and 1122520200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122520219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476290 + ... + 478640.

It is an arithmetic number, because the mean of its divisors is an integer number (56800800).

Almost surely, 2^1122520215 is an apocalyptic number.

1122520215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1122520215 is a deficient number, since it is larger than the sum of its proper divisors (695105385).

1122520215 is a wasteful number, since it uses less digits than its factorization.

1122520215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1122520215 is about 33504.0328169610. The cubic root of 1122520215 is about 1039.2771774111.

Adding to 1122520215 its reverse (5120252211), we get a palindrome (6242772426).

The spelling of 1122520215 in words is "one billion, one hundred twenty-two million, five hundred twenty thousand, two hundred fifteen".