221111020122 has 64 divisors (see below), whose sum is σ = 466961414400. Its totient is φ = 69661937664.

The previous prime is 221111020111. The next prime is 221111020133. The reversal of 221111020122 is 221020111122.

It is an interprime number because it is at equal distance from previous prime (221111020111) and next prime (221111020133).

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 31 ways as a sum of consecutive naturals, for example, 3940608 + ... + 3996324.

It is an arithmetic number, because the mean of its divisors is an integer number (7296272100).

Almost surely, 2^221111020122 is an apocalyptic number.

221111020122 is an abundant number, since it is smaller than the sum of its proper divisors (245850394278).

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

221111020122 is a wasteful number, since it uses less digits than its factorization.

221111020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56087.

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

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

The spelling of 221111020122 in words is "two hundred twenty-one billion, one hundred eleven million, twenty thousand, one hundred twenty-two".