2221000212222 has 48 divisors (see below), whose sum is σ = 5257956712320. Its totient is φ = 671963720400.

The previous prime is 2221000212217. The next prime is 2221000212239. The reversal of 2221000212222 is 2222120001222.

2221000212222 is a `hidden beast` number, since 22 + 210 + 0 + 0 + 212 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2221000212195 and 2221000212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8763472 + ... + 9013347.

It is an arithmetic number, because the mean of its divisors is an integer number (109540764840).

Almost surely, 2^{2221000212222} is an apocalyptic number.

2221000212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221000212222 is an abundant number, since it is smaller than the sum of its proper divisors (3036956500098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221000212222 is a wasteful number, since it uses less digits than its factorization.

2221000212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17777469 (or 17777466 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2221000212222 its reverse (2222120001222), we get a palindrome (4443120213444).

The spelling of 2221000212222 in words is "two trillion, two hundred twenty-one billion, two hundred twelve thousand, two hundred twenty-two".