2221722546 has 32 divisors (see below), whose sum is σ = 4515016128. Its totient is φ = 728671680.

The previous prime is 2221722523. The next prime is 2221722593. The reversal of 2221722546 is 6452271222.

It is a Curzon 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, 407736 + ... + 413148.

It is an arithmetic number, because the mean of its divisors is an integer number (141094254).

Almost surely, 2^2221722546 is an apocalyptic number.

2221722546 is an abundant number, since it is smaller than the sum of its proper divisors (2293293582).

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

2221722546 is a wasteful number, since it uses less digits than its factorization.

2221722546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506.

The product of its digits is 26880, while the sum is 33.

The square root of 2221722546 is about 47135.1519144683. The cubic root of 2221722546 is about 1304.8580647442.

Adding to 2221722546 its reverse (6452271222), we get a palindrome (8673993768).

The spelling of 2221722546 in words is "two billion, two hundred twenty-one million, seven hundred twenty-two thousand, five hundred forty-six".