3201221121001 has 4 divisors (see below), whose sum is σ = 3201731119492. Its totient is φ = 3200711122512.

The previous prime is 3201221120987. The next prime is 3201221121011. The reversal of 3201221121001 is 1001211221023.

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 3182474034601 + 18747086400 = 1783949^2 + 136920^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201221121001 - 2¹³ = 3201221112809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201221121011) 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, 254989830 + ... + 255002383.

It is an arithmetic number, because the mean of its divisors is an integer number (800432779873).

Almost surely, 2^{3201221121001} is an apocalyptic number.

It is an amenable number.

3201221121001 is a deficient number, since it is larger than the sum of its proper divisors (509998491).

3201221121001 is an equidigital number, since it uses as much as digits as its factorization.

3201221121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509998490.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 3201221121001 its reverse (1001211221023), we get a palindrome (4202432342024).

The spelling of 3201221121001 in words is "three trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, one".