281222015 has 16 divisors (see below), whose sum is σ = 347937120. Its totient is φ = 218044800.

The previous prime is 281221957. The next prime is 281222057. The reversal of 281222015 is 510222182.

It is not a de Polignac number, because 281222015 - 2¹⁰ = 281220991 is a prime.

It is a congruent number.

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, 46940 + ... + 52590.

It is an arithmetic number, because the mean of its divisors is an integer number (21746070).

Almost surely, 2^281222015 is an apocalyptic number.

281222015 is a deficient number, since it is larger than the sum of its proper divisors (66715105).

281222015 is a wasteful number, since it uses less digits than its factorization.

281222015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 281222015 is about 16769.6754589944. The cubic root of 281222015 is about 655.1636170320.

Adding to 281222015 its reverse (510222182), we get a palindrome (791444197).

The spelling of 281222015 in words is "two hundred eighty-one million, two hundred twenty-two thousand, fifteen".