121111122100222 has 8 divisors (see below), whose sum is σ = 181667062656936. Its totient is φ = 60555434547912.

The previous prime is 121111122100187. The next prime is 121111122100247. The reversal of 121111122100222 is 222001221111121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121111122100222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62049808 + ... + 63971875.

It is an arithmetic number, because the mean of its divisors is an integer number (22708382832117).

Almost surely, 2^{121111122100222} is an apocalyptic number.

121111122100222 is a deficient number, since it is larger than the sum of its proper divisors (60555940556714).

121111122100222 is a wasteful number, since it uses less digits than its factorization.

121111122100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126502202.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121111122100222 its reverse (222001221111121), we get a palindrome (343112343211343).

The spelling of 121111122100222 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred thousand, two hundred twenty-two".