221222000222122 has 4 divisors (see below), whose sum is σ = 331833000333186. Its totient is φ = 110611000111060.

The previous prime is 221222000222107. The next prime is 221222000222131.

221222000222122 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 165264882980521 + 55957117241601 = 12855539^2 + 7480449^2 .

It is a super-3 number, since 3×221222000222122³ (a number of 44 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 221222000222093 and 221222000222102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55305500055529 + ... + 55305500055532.

Almost surely, 2^{221222000222122} is an apocalyptic number.

221222000222122 is a deficient number, since it is larger than the sum of its proper divisors (110611000111064).

221222000222122 is a wasteful number, since it uses less digits than its factorization.

221222000222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110611000111063.

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 221222000 and 222122, that added together give a palindrome (221444122).

The spelling of 221222000222122 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty-two thousand, one hundred twenty-two".