221110221210122 has 16 divisors (see below), whose sum is σ = 331739965972800. Its totient is φ = 110530233180480.

The previous prime is 221110221210107. The next prime is 221110221210133. The reversal of 221110221210122 is 221012122011122.

It is a junction number, because it is equal to n+sod(n) for n = 221110221210094 and 221110221210103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250400629 + ... + 1250577447.

It is an arithmetic number, because the mean of its divisors is an integer number (20733747873300).

Almost surely, 2^{221110221210122} is an apocalyptic number.

221110221210122 is a deficient number, since it is larger than the sum of its proper divisors (110629744762678).

221110221210122 is a wasteful number, since it uses less digits than its factorization.

221110221210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313981.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221110221210122 its reverse (221012122011122), we get a palindrome (442122343221244).

The spelling of 221110221210122 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-two".