122011111212 has 12 divisors (see below), whose sum is σ = 284692592856. Its totient is φ = 40670370400.

The previous prime is 122011111193. The next prime is 122011111217. The reversal of 122011111212 is 212111110221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×122011111212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122011111191 and 122011111200.

It is not an unprimeable number, because it can be changed into a prime (122011111217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5083796289 + ... + 5083796312.

It is an arithmetic number, because the mean of its divisors is an integer number (23724382738).

Almost surely, 2^122011111212 is an apocalyptic number.

122011111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122011111212 is an abundant number, since it is smaller than the sum of its proper divisors (162681481644).

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

122011111212 is a wasteful number, since it uses less digits than its factorization.

122011111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167592608 (or 10167592606 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122011111212 its reverse (212111110221), we get a palindrome (334122221433).

Subtracting 122011111212 from its reverse (212111110221), we obtain a palindrome (90099999009).

The spelling of 122011111212 in words is "one hundred twenty-two billion, eleven million, one hundred eleven thousand, two hundred twelve".