3201111033221 has 4 divisors (see below), whose sum is σ = 3389411682252. Its totient is φ = 3012810384192.

The previous prime is 3201111033217. The next prime is 3201111033227. The reversal of 3201111033221 is 1223301111023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2939493105025 + 261617928196 = 1714495^2 + 511486^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201111033221 - 2² = 3201111033217 is a prime.

It is a super-2 number, since 2×3201111033221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201111033193 and 3201111033202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201111033227) 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 3 ways as a sum of consecutive naturals, for example, 94150324490 + ... + 94150324523.

It is an arithmetic number, because the mean of its divisors is an integer number (847352920563).

Almost surely, 2^{3201111033221} is an apocalyptic number.

It is an amenable number.

3201111033221 is a deficient number, since it is larger than the sum of its proper divisors (188300649031).

3201111033221 is a wasteful number, since it uses less digits than its factorization.

3201111033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188300649030.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3201111033221 its reverse (1223301111023), we get a palindrome (4424412144244).

The spelling of 3201111033221 in words is "three trillion, two hundred one billion, one hundred eleven million, thirty-three thousand, two hundred twenty-one".