2221960905 has 24 divisors (see below), whose sum is σ = 3853961280. Its totient is φ = 1184257440.

The previous prime is 2221960903. The next prime is 2221960981. The reversal of 2221960905 is 5090691222.

It is a happy number.

2221960905 is a `hidden beast` number, since 22 + 21 + 9 + 609 + 0 + 5 = 666.

It is not a de Polignac number, because 2221960905 - 2¹ = 2221960903 is a prime.

It is a super-2 number, since 2×2221960905² = 9874220526696838050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221960905.

It is not an unprimeable number, because it can be changed into a prime (2221960903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55420 + ... + 86690.

It is an arithmetic number, because the mean of its divisors is an integer number (160581720).

Almost surely, 2^2221960905 is an apocalyptic number.

It is an amenable number.

2221960905 is a deficient number, since it is larger than the sum of its proper divisors (1632000375).

2221960905 is a wasteful number, since it uses less digits than its factorization.

2221960905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32861 (or 32858 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2221960905 is about 47137.6803099177. The cubic root of 2221960905 is about 1304.9047272676.

The spelling of 2221960905 in words is "two billion, two hundred twenty-one million, nine hundred sixty thousand, nine hundred five".