121222011222 has 48 divisors (see below), whose sum is σ = 282984640848. Its totient is φ = 37281504960.

The previous prime is 121222011217. The next prime is 121222011247. The reversal of 121222011222 is 222110222121.

It is a happy number.

121222011222 is a `hidden beast` number, since 1 + 212 + 220 + 11 + 222 = 666.

121222011222 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 junction number, because it is equal to n+sod(n) for n = 121222011195 and 121222011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380013 + ... + 621975.

It is an arithmetic number, because the mean of its divisors is an integer number (5895513351).

Almost surely, 2^121222011222 is an apocalyptic number.

121222011222 is an abundant number, since it is smaller than the sum of its proper divisors (161762629626).

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

121222011222 is a wasteful number, since it uses less digits than its factorization.

121222011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244125 (or 244122 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222011222 its reverse (222110222121), we get a palindrome (343332233343).

The spelling of 121222011222 in words is "one hundred twenty-one billion, two hundred twenty-two million, eleven thousand, two hundred twenty-two".