12011201032221 has 6 divisors (see below), whose sum is σ = 17349512602110. Its totient is φ = 8007467354808.

The previous prime is 12011201032211. The next prime is 12011201032223. The reversal of 12011201032221 is 12223010211021.

12011201032221 is a `hidden beast` number, since 1 + 201 + 120 + 1 + 0 + 322 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10628838836100 + 1382362196121 = 3260190^2 + 1175739^2 .

It is not a de Polignac number, because 12011201032221 - 2⁷ = 12011201032093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011201032194 and 12011201032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201032223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667288946226 + ... + 667288946243.

It is an arithmetic number, because the mean of its divisors is an integer number (2891585433685).

Almost surely, 2^{12011201032221} is an apocalyptic number.

It is an amenable number.

12011201032221 is a deficient number, since it is larger than the sum of its proper divisors (5338311569889).

12011201032221 is a wasteful number, since it uses less digits than its factorization.

12011201032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334577892475 (or 1334577892472 counting only the distinct ones).

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

Adding to 12011201032221 its reverse (12223010211021), we get a palindrome (24234211243242).

The spelling of 12011201032221 in words is "twelve trillion, eleven billion, two hundred one million, thirty-two thousand, two hundred twenty-one".