121200112221203 has 4 divisors (see below), whose sum is σ = 121453139595840. Its totient is φ = 120947084846568.

The previous prime is 121200112221163. The next prime is 121200112221229. The reversal of 121200112221203 is 302122211002121.

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 121200112221203 - 2¹⁶ = 121200112155667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200112221263) 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, 126513686600 + ... + 126513687557.

It is an arithmetic number, because the mean of its divisors is an integer number (30363284898960).

Almost surely, 2^{121200112221203} is an apocalyptic number.

121200112221203 is a deficient number, since it is larger than the sum of its proper divisors (253027374637).

121200112221203 is an equidigital number, since it uses as much as digits as its factorization.

121200112221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253027374636.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121200112221203 its reverse (302122211002121), we get a palindrome (423322323223324).

The spelling of 121200112221203 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twelve million, two hundred twenty-one thousand, two hundred three".