221112211212122 has 16 divisors (see below), whose sum is σ = 349457360616000. Its totient is φ = 104637518226720.

The previous prime is 221112211212107. The next prime is 221112211212227. The reversal of 221112211212122 is 221212112211122.

It is a super-2 number, since 2×221112211212122² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773431254 + ... + 2773510977.

It is an arithmetic number, because the mean of its divisors is an integer number (21841085038500).

Almost surely, 2^{221112211212122} is an apocalyptic number.

221112211212122 is a deficient number, since it is larger than the sum of its proper divisors (128345149403878).

221112211212122 is a wasteful number, since it uses less digits than its factorization.

221112211212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546943301.

The product of its digits is 256, while the sum is 23.

Adding to 221112211212122 its reverse (221212112211122), we get a palindrome (442324323423244).

The spelling of 221112211212122 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred eleven million, two hundred twelve thousand, one hundred twenty-two".