122111220220 has 48 divisors (see below), whose sum is σ = 288769775616. Its totient is φ = 42971688000.

The previous prime is 122111220173. The next prime is 122111220221. The reversal of 122111220220 is 22022111221.

It is a happy number.

It is a super-2 number, since 2×122111220220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111220194 and 122111220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111220221) 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, 8945616 + ... + 8959255.

It is an arithmetic number, because the mean of its divisors is an integer number (6016036992).

Almost surely, 2^122111220220 is an apocalyptic number.

122111220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111220220 is an abundant number, since it is smaller than the sum of its proper divisors (166658555396).

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

122111220220 is a wasteful number, since it uses less digits than its factorization.

122111220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17904922 (or 17904920 counting only the distinct ones).

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

Adding to 122111220220 its reverse (22022111221), we get a palindrome (144133331441).

The spelling of 122111220220 in words is "one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".