121122112111222 has 4 divisors (see below), whose sum is σ = 181683168166836. Its totient is φ = 60561056055610.

The previous prime is 121122112111109. The next prime is 121122112111271. The reversal of 121122112111222 is 222111211221121.

It is a semiprime because it is the product of two primes.

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 = 121122112111193 and 121122112111202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280528027804 + ... + 30280528027807.

It is an arithmetic number, because the mean of its divisors is an integer number (45420792041709).

Almost surely, 2^{121122112111222} is an apocalyptic number.

121122112111222 is a deficient number, since it is larger than the sum of its proper divisors (60561056055614).

121122112111222 is an equidigital number, since it uses as much as digits as its factorization.

121122112111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60561056055613.

The product of its digits is 128, while the sum is 22.

Adding to 121122112111222 its reverse (222111211221121), we get a palindrome (343233323332343).

The spelling of 121122112111222 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty-two".