122220111101221 has 16 divisors (see below), whose sum is σ = 141612561076608. Its totient is φ = 103311154944000.

The previous prime is 122220111101219. The next prime is 122220111101243. The reversal of 122220111101221 is 122101111022221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122220111101221 - 2¹ = 122220111101219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220111105221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12242620 + ... + 19857541.

It is an arithmetic number, because the mean of its divisors is an integer number (8850785067288).

Almost surely, 2^{122220111101221} is an apocalyptic number.

It is an amenable number.

122220111101221 is a deficient number, since it is larger than the sum of its proper divisors (19392449975387).

122220111101221 is an equidigital number, since it uses as much as digits as its factorization.

122220111101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32107692.

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

Adding to 122220111101221 its reverse (122101111022221), we get a palindrome (244321222123442).

The spelling of 122220111101221 in words is "one hundred twenty-two trillion, two hundred twenty billion, one hundred eleven million, one hundred one thousand, two hundred twenty-one".