221222002222 has 32 divisors (see below), whose sum is σ = 359464089600. Its totient is φ = 101501745408.

The previous prime is 221222002207. The next prime is 221222002283. The reversal of 221222002222 is 222200222122.

It is a super-2 number, since 2×221222002222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221222002222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6534154 + ... + 6567922.

It is an arithmetic number, because the mean of its divisors is an integer number (11233252800).

Almost surely, 2^221222002222 is an apocalyptic number.

221222002222 is a deficient number, since it is larger than the sum of its proper divisors (138242087378).

221222002222 is a wasteful number, since it uses less digits than its factorization.

221222002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35260.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 221222002222 its reverse (222200222122), we get a palindrome (443422224344).

The spelling of 221222002222 in words is "two hundred twenty-one billion, two hundred twenty-two million, two thousand, two hundred twenty-two".