2221011222212 has 12 divisors (see below), whose sum is σ = 3892649779116. Its totient is φ = 1108825571040.

The previous prime is 2221011222191. The next prime is 2221011222229. The reversal of 2221011222212 is 2122221101222.

It can be written as a sum of positive squares in 2 ways, for example, as 1026768783616 + 1194242438596 = 1013296^2 + 1092814^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420007043 + ... + 420012330.

It is an arithmetic number, because the mean of its divisors is an integer number (324387481593).

Almost surely, 2^{2221011222212} is an apocalyptic number.

It is an amenable number.

2221011222212 is a deficient number, since it is larger than the sum of its proper divisors (1671638556904).

2221011222212 is a wasteful number, since it uses less digits than its factorization.

2221011222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840020038 (or 840020036 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221011222212 its reverse (2122221101222), we get a palindrome (4343232323434).

The spelling of 2221011222212 in words is "two trillion, two hundred twenty-one billion, eleven million, two hundred twenty-two thousand, two hundred twelve".