221111002122 has 16 divisors (see below), whose sum is σ = 442233574560. Its totient is φ = 73701738992.

The previous prime is 221111002121. The next prime is 221111002141. The reversal of 221111002122 is 221200111122.

221111002122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221111002121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 222948 + ... + 701375.

It is an arithmetic number, because the mean of its divisors is an integer number (27639598410).

Almost surely, 2^221111002122 is an apocalyptic number.

221111002122 is an abundant number, since it is smaller than the sum of its proper divisors (221122572438).

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

221111002122 is a wasteful number, since it uses less digits than its factorization.

221111002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964197.

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

Adding to 221111002122 its reverse (221200111122), we get a palindrome (442311113244).

The spelling of 221111002122 in words is "two hundred twenty-one billion, one hundred eleven million, two thousand, one hundred twenty-two".