121000020222111 has 4 divisors (see below), whose sum is σ = 161333360296152. Its totient is φ = 80666680148072.

The previous prime is 121000020222023. The next prime is 121000020222119. The reversal of 121000020222111 is 111222020000121.

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

It is a cyclic number.

It is not a de Polignac number, because 121000020222111 - 2¹⁵ = 121000020189343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000020222119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20166670037016 + ... + 20166670037021.

It is an arithmetic number, because the mean of its divisors is an integer number (40333340074038).

Almost surely, 2^{121000020222111} is an apocalyptic number.

121000020222111 is a deficient number, since it is larger than the sum of its proper divisors (40333340074041).

121000020222111 is an equidigital number, since it uses as much as digits as its factorization.

121000020222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40333340074040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121000020222111 its reverse (111222020000121), we get a palindrome (232222040222232).

The spelling of 121000020222111 in words is "one hundred twenty-one trillion, twenty million, two hundred twenty-two thousand, one hundred eleven".