12021221110203 has 96 divisors (see below), whose sum is σ = 18565688494080. Its totient is φ = 7768225866240.

The previous prime is 12021221110189. The next prime is 12021221110207. The reversal of 12021221110203 is 30201112212021.

12021221110203 is a `hidden beast` number, since 120 + 212 + 21 + 110 + 203 = 666.

It is not a de Polignac number, because 12021221110203 - 2⁴ = 12021221110187 is a prime.

It is a super-3 number, since 3×12021221110203³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021221110207) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1088183226 + ... + 1088194272.

It is an arithmetic number, because the mean of its divisors is an integer number (193392588480).

Almost surely, 2^{12021221110203} is an apocalyptic number.

12021221110203 is a deficient number, since it is larger than the sum of its proper divisors (6544467383877).

12021221110203 is a wasteful number, since it uses less digits than its factorization.

12021221110203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11799 (or 11787 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12021221110203 its reverse (30201112212021), we get a palindrome (42222333322224).

It can be divided in two parts, 1202122 and 1110203, that added together give a triangular number (2312325 = T₂₁₅₀).

The spelling of 12021221110203 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, two hundred three".