122220111220 has 24 divisors (see below), whose sum is σ = 256699876608. Its totient is φ = 48880874400.

The previous prime is 122220111203. The next prime is 122220111283. The reversal of 122220111220 is 22111022221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122220111194 and 122220111203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307276 + ... + 582115.

It is an arithmetic number, because the mean of its divisors is an integer number (10695828192).

Almost surely, 2^122220111220 is an apocalyptic number.

122220111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122220111220 is an abundant number, since it is smaller than the sum of its proper divisors (134479765388).

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

122220111220 is a wasteful number, since it uses less digits than its factorization.

122220111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896271 (or 896269 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122220111220 its reverse (22111022221), we get a palindrome (144331133441).

The spelling of 122220111220 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, two hundred twenty".