2221512276 has 24 divisors (see below), whose sum is σ = 5184486720. Its totient is φ = 740367232.

The previous prime is 2221512263. The next prime is 2221512373. The reversal of 2221512276 is 6722151222.

It is a congruent number.

It is an unprimeable number.

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, 67105 + ... + 94583.

It is an arithmetic number, because the mean of its divisors is an integer number (216020280).

Almost surely, 2^2221512276 is an apocalyptic number.

It is an amenable number.

2221512276 is an abundant number, since it is smaller than the sum of its proper divisors (2962974444).

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

2221512276 is a wasteful number, since it uses less digits than its factorization.

2221512276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34223 (or 34221 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 2221512276 is about 47132.9213607644. The cubic root of 2221512276 is about 1304.8168983135.

Adding to 2221512276 its reverse (6722151222), we get a palindrome (8943663498).

The spelling of 2221512276 in words is "two billion, two hundred twenty-one million, five hundred twelve thousand, two hundred seventy-six".