122210111212 has 96 divisors (see below), whose sum is σ = 256470810624. Its totient is φ = 49852756800.

The previous prime is 122210111167. The next prime is 122210111239. The reversal of 122210111212 is 212111012221.

It is a super-2 number, since 2×122210111212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28531623 + ... + 28535905.

It is an arithmetic number, because the mean of its divisors is an integer number (2671570944).

Almost surely, 2^122210111212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122210111212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128235405312).

122210111212 is an abundant number, since it is smaller than the sum of its proper divisors (134260699412).

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

122210111212 is a wasteful number, since it uses less digits than its factorization.

122210111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4857 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122210111212 its reverse (212111012221), we get a palindrome (334321123433).

The spelling of 122210111212 in words is "one hundred twenty-two billion, two hundred ten million, one hundred eleven thousand, two hundred twelve".