121011011112222 has 72 divisors (see below), whose sum is σ = 332724153029112. Its totient is φ = 31431431455200.

The previous prime is 121011011112139. The next prime is 121011011112301. The reversal of 121011011112222 is 222211110110121.

It is a happy number.

121011011112222 is a `hidden beast` number, since 1 + 210 + 110 + 11 + 112 + 222 = 666.

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 = 121011011112195 and 121011011112204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6236385429 + ... + 6236404832.

It is an arithmetic number, because the mean of its divisors is an integer number (4621168792071).

Almost surely, 2^{121011011112222} is an apocalyptic number.

121011011112222 is an abundant number, since it is smaller than the sum of its proper divisors (211713141916890).

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

121011011112222 is a wasteful number, since it uses less digits than its factorization.

121011011112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12472790294 (or 12472790284 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121011011112222 its reverse (222211110110121), we get a palindrome (343222121222343).

The spelling of 121011011112222 in words is "one hundred twenty-one trillion, eleven billion, eleven million, one hundred twelve thousand, two hundred twenty-two".