121100220201 has 16 divisors (see below), whose sum is σ = 161793331200. Its totient is φ = 80570438928.

The previous prime is 121100220161. The next prime is 121100220209. The reversal of 121100220201 is 102022001121.

It is not a de Polignac number, because 121100220201 - 2¹⁷ = 121100089129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121100220209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3578880 + ... + 3612558.

It is an arithmetic number, because the mean of its divisors is an integer number (10112083200).

Almost surely, 2^121100220201 is an apocalyptic number.

It is an amenable number.

121100220201 is a deficient number, since it is larger than the sum of its proper divisors (40693110999).

121100220201 is a wasteful number, since it uses less digits than its factorization.

121100220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36068.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121100220201 its reverse (102022001121), we get a palindrome (223122221322).

The spelling of 121100220201 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty thousand, two hundred one".