221020111122 has 16 divisors (see below), whose sum is σ = 442079301312. Its totient is φ = 73666857200.

The previous prime is 221020110979. The next prime is 221020111157. The reversal of 221020111122 is 221111020122.

221020111122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554513 + ... + 1690724.

It is an arithmetic number, because the mean of its divisors is an integer number (27629956332).

Almost surely, 2^221020111122 is an apocalyptic number.

221020111122 is an abundant number, since it is smaller than the sum of its proper divisors (221059190190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221020111122 is a wasteful number, since it uses less digits than its factorization.

221020111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256593.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221020111122 its reverse (221111020122), we get a palindrome (442131131244).

The spelling of 221020111122 in words is "two hundred twenty-one billion, twenty million, one hundred eleven thousand, one hundred twenty-two".