121100200121 has 8 divisors (see below), whose sum is σ = 121833863424. Its totient is φ = 120368744320.

The previous prime is 121100200103. The next prime is 121100200127. The reversal of 121100200121 is 121002001121.

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

It is a cyclic number.

It is not a de Polignac number, because 121100200121 - 2¹⁸ = 121099937977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121100200127) 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, 441761 + ... + 661326.

It is an arithmetic number, because the mean of its divisors is an integer number (15229232928).

Almost surely, 2^121100200121 is an apocalyptic number.

It is an amenable number.

121100200121 is a deficient number, since it is larger than the sum of its proper divisors (733663303).

121100200121 is a wasteful number, since it uses less digits than its factorization.

121100200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103751.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121100200121 its reverse (121002001121), we get a palindrome (242102201242).

The spelling of 121100200121 in words is "one hundred twenty-one billion, one hundred million, two hundred thousand, one hundred twenty-one".