221020111211122 has 8 divisors (see below), whose sum is σ = 332009949983472. Its totient is φ = 110350127883300.

The previous prime is 221020111211113. The next prime is 221020111211149. The reversal of 221020111211122 is 221112111020122.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221020111211122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79963859404 + ... + 79963862167.

It is an arithmetic number, because the mean of its divisors is an integer number (41501243747934).

Almost surely, 2^{221020111211122} is an apocalyptic number.

221020111211122 is a deficient number, since it is larger than the sum of its proper divisors (110989838772350).

221020111211122 is a wasteful number, since it uses less digits than its factorization.

221020111211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159927722264.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221020111211122 its reverse (221112111020122), we get a palindrome (442132222231244).

The spelling of 221020111211122 in words is "two hundred twenty-one trillion, twenty billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty-two".