2221556205 has 32 divisors (see below), whose sum is σ = 3943365120. Its totient is φ = 1058857280.

The previous prime is 2221556203. The next prime is 2221556213. The reversal of 2221556205 is 5026551222.

It is not a de Polignac number, because 2221556205 - 2¹ = 2221556203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221556203) 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, 104367 + ... + 123836.

It is an arithmetic number, because the mean of its divisors is an integer number (123230160).

Almost surely, 2^2221556205 is an apocalyptic number.

It is an amenable number.

2221556205 is a deficient number, since it is larger than the sum of its proper divisors (1721808915).

2221556205 is a wasteful number, since it uses less digits than its factorization.

2221556205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228281.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2221556205 is about 47133.3873703132. The cubic root of 2221556205 is about 1304.8254988997.

The spelling of 2221556205 in words is "two billion, two hundred twenty-one million, five hundred fifty-six thousand, two hundred five".