2822121247 has 4 divisors (see below), whose sum is σ = 3078677736. Its totient is φ = 2565564760.

The previous prime is 2822121223. The next prime is 2822121257. The reversal of 2822121247 is 7421212282.

2822121247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2822121247 - 2¹¹ = 2822119199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2822121257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128278228 + ... + 128278249.

It is an arithmetic number, because the mean of its divisors is an integer number (769669434).

Almost surely, 2^2822121247 is an apocalyptic number.

2822121247 is a deficient number, since it is larger than the sum of its proper divisors (256556489).

2822121247 is a wasteful number, since it uses less digits than its factorization.

2822121247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256556488.

The product of its digits is 7168, while the sum is 31.

The square root of 2822121247 is about 53123.6411308562. The cubic root of 2822121247 is about 1413.1618007393.

The spelling of 2822121247 in words is "two billion, eight hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-seven".