121222202110111 has 16 divisors (see below), whose sum is σ = 128425845600000. Its totient is φ = 114026665903488.

The previous prime is 121222202110063. The next prime is 121222202110123. The reversal of 121222202110111 is 111011202222121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222202110111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222202116111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1243268640 + ... + 1243366138.

It is an arithmetic number, because the mean of its divisors is an integer number (8026615350000).

Almost surely, 2^{121222202110111} is an apocalyptic number.

121222202110111 is a deficient number, since it is larger than the sum of its proper divisors (7203643489889).

121222202110111 is a wasteful number, since it uses less digits than its factorization.

121222202110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138318.

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

Adding to 121222202110111 its reverse (111011202222121), we get a palindrome (232233404332232).

The spelling of 121222202110111 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred two million, one hundred ten thousand, one hundred eleven".