121211121222 has 32 divisors (see below), whose sum is σ = 275089075200. Its totient is φ = 39544052904.

The previous prime is 121211121203. The next prime is 121211121223. The reversal of 121211121222 is 222121112121.

121211121222 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 nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121211121195 and 121211121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211121223) 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, 23876722 + ... + 23881797.

It is an arithmetic number, because the mean of its divisors is an integer number (8596533600).

Almost surely, 2^121211121222 is an apocalyptic number.

121211121222 is an abundant number, since it is smaller than the sum of its proper divisors (153877953978).

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

121211121222 is a wasteful number, since it uses less digits than its factorization.

121211121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47758577 (or 47758571 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 121211121222 its reverse (222121112121), we get a palindrome (343332233343).

The spelling of 121211121222 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".