221011121222222 has 16 divisors (see below), whose sum is σ = 332704982810400. Its totient is φ = 110110093541280.

The previous prime is 221011121222219. The next prime is 221011121222303. The reversal of 221011121222222 is 222222121110122.

It is a super-2 number, since 2×221011121222222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157615322 + ... + 159011357.

It is an arithmetic number, because the mean of its divisors is an integer number (20794061425650).

Almost surely, 2^{221011121222222} is an apocalyptic number.

221011121222222 is a deficient number, since it is larger than the sum of its proper divisors (111693861588178).

221011121222222 is a wasteful number, since it uses less digits than its factorization.

221011121222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316627931.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221011121222222 its reverse (222222121110122), we get a palindrome (443233242332344).

The spelling of 221011121222222 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".