2221011212222 has 64 divisors (see below), whose sum is σ = 3903255656640. Its totient is φ = 936645888000.

The previous prime is 2221011212219. The next prime is 2221011212243. The reversal of 2221011212222 is 2222121101222.

It is a junction number, because it is equal to n+sod(n) for n = 2221011212194 and 2221011212203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8521868 + ... + 8778624.

It is an arithmetic number, because the mean of its divisors is an integer number (60988369635).

Almost surely, 2^{2221011212222} is an apocalyptic number.

2221011212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221011212222 is a deficient number, since it is larger than the sum of its proper divisors (1682244444418).

2221011212222 is a wasteful number, since it uses less digits than its factorization.

2221011212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257117.

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

Adding to 2221011212222 its reverse (2222121101222), we get a palindrome (4443132313444).

The spelling of 2221011212222 in words is "two trillion, two hundred twenty-one billion, eleven million, two hundred twelve thousand, two hundred twenty-two".