2221555105 has 16 divisors (see below), whose sum is σ = 3323677824. Its totient is φ = 1384865280.

The previous prime is 2221555103. The next prime is 2221555109. The reversal of 2221555105 is 5015551222.

It is not a de Polignac number, because 2221555105 - 2¹ = 2221555103 is a prime.

It is a super-2 number, since 2×2221555105² = 9870614169103122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221555103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2884752 + ... + 2885521.

It is an arithmetic number, because the mean of its divisors is an integer number (207729864).

Almost surely, 2^2221555105 is an apocalyptic number.

It is an amenable number.

2221555105 is a deficient number, since it is larger than the sum of its proper divisors (1102122719).

2221555105 is a wasteful number, since it uses less digits than its factorization.

2221555105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770296.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2221555105 is about 47133.3757013011. The cubic root of 2221555105 is about 1304.8252835389.

The spelling of 2221555105 in words is "two billion, two hundred twenty-one million, five hundred fifty-five thousand, one hundred five".