221111000122 has 8 divisors (see below), whose sum is σ = 334087423956. Its totient is φ = 109748525472.

The previous prime is 221111000087. The next prime is 221111000129. The reversal of 221111000122 is 221000111122.

It can be written as a sum of positive squares in 2 ways, for example, as 198460449121 + 22650551001 = 445489^2 + 150501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221111000129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403486953 + ... + 403487500.

Almost surely, 2^221111000122 is an apocalyptic number.

221111000122 is a deficient number, since it is larger than the sum of its proper divisors (112976423834).

221111000122 is a wasteful number, since it uses less digits than its factorization.

221111000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806974592.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221111000122 its reverse (221000111122), we get a palindrome (442111111244).

It can be divided in two parts, 221111000 and 122, that added together give a palindrome (221111122).

The spelling of 221111000122 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty-two", and thus it is an aban number.