221220111121122 has 8 divisors (see below), whose sum is σ = 442440222242256. Its totient is φ = 73740037040372.

The previous prime is 221220111121069. The next prime is 221220111121151. The reversal of 221220111121122 is 221121111022122.

221220111121122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

221220111121122 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18435009260088 + ... + 18435009260099.

It is an arithmetic number, because the mean of its divisors is an integer number (55305027780282).

Almost surely, 2^{221220111121122} is an apocalyptic number.

221220111121122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221220111121122 is a wasteful number, since it uses less digits than its factorization.

221220111121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36870018520192.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221220111121122 its reverse (221121111022122), we get a palindrome (442341222143244).

The spelling of 221220111121122 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".