122011221222 has 96 divisors (see below), whose sum is σ = 292008356640. Its totient is φ = 36510312960.

The previous prime is 122011221221. The next prime is 122011221229. The reversal of 122011221222 is 222122110221.

It is a happy number.

122011221222 is a `hidden beast` number, since 1 + 220 + 1 + 1 + 221 + 222 = 666.

122011221222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122011221195 and 122011221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011221221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15027508 + ... + 15035624.

It is an arithmetic number, because the mean of its divisors is an integer number (3041753715).

Almost surely, 2^122011221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122011221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146004178320).

122011221222 is an abundant number, since it is smaller than the sum of its proper divisors (169997135418).

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

122011221222 is a wasteful number, since it uses less digits than its factorization.

122011221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078 (or 9075 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122011221222 its reverse (222122110221), we get a palindrome (344133331443).

The spelling of 122011221222 in words is "one hundred twenty-two billion, eleven million, two hundred twenty-one thousand, two hundred twenty-two".