121111100000222 has 16 divisors (see below), whose sum is σ = 182819815123680. Its totient is φ = 60171420915168.

The previous prime is 121111100000221. The next prime is 121111100000239. The reversal of 121111100000222 is 222000001111121.

It is a junction number, because it is equal to n+sod(n) for n = 121111100000197 and 121111100000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111100000221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63886697 + ... + 65755092.

It is an arithmetic number, because the mean of its divisors is an integer number (11426238445230).

Almost surely, 2^{121111100000222} is an apocalyptic number.

121111100000222 is a deficient number, since it is larger than the sum of its proper divisors (61708715123458).

121111100000222 is a wasteful number, since it uses less digits than its factorization.

121111100000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129644755.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121111100000222 its reverse (222000001111121), we get a palindrome (343111101111343).

The spelling of 121111100000222 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred million, two hundred twenty-two", and thus it is an aban number.