221021121111122 has 16 divisors (see below), whose sum is σ = 332011841673600. Its totient is φ = 110350612488240.

The previous prime is 221021121111103. The next prime is 221021121111127. The reversal of 221021121111122 is 221111121120122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221021121111094 and 221021121111103.

It is not an unprimeable number, because it can be changed into a prime (221021121111127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22116122 + ... + 30514997.

It is an arithmetic number, because the mean of its divisors is an integer number (20750740104600).

Almost surely, 2^{221021121111122} is an apocalyptic number.

221021121111122 is a deficient number, since it is larger than the sum of its proper divisors (110990720562478).

221021121111122 is a wasteful number, since it uses less digits than its factorization.

221021121111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52634161.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 221021121111122 its reverse (221111121120122), we get a palindrome (442132242231244).

The spelling of 221021121111122 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-two".