2221000022210 has 32 divisors (see below), whose sum is σ = 4234871350512. Its totient is φ = 835764572160.

The previous prime is 2221000022203. The next prime is 2221000022231. The reversal of 2221000022210 is 122200001222.

It can be written as a sum of positive squares in 8 ways, for example, as 1765951289881 + 455048732329 = 1328891^2 + 674573^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563607 + ... + 3318746.

Almost surely, 2^{2221000022210} is an apocalyptic number.

2221000022210 is a deficient number, since it is larger than the sum of its proper divisors (2013871328302).

2221000022210 is a wasteful number, since it uses less digits than its factorization.

2221000022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884598.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2221000022210 its reverse (122200001222), we get a palindrome (2343200023432).

The spelling of 2221000022210 in words is "two trillion, two hundred twenty-one billion, twenty-two thousand, two hundred ten".