3221312212001 has 4 divisors (see below), whose sum is σ = 3469105459092. Its totient is φ = 2973518964912.

The previous prime is 3221312211961. The next prime is 3221312212039. The reversal of 3221312212001 is 1002122131223.

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 472759380625 + 2748552831376 = 687575^2 + 1657876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221312212001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3221312212051) 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, 123896623526 + ... + 123896623551.

It is an arithmetic number, because the mean of its divisors is an integer number (867276364773).

Almost surely, 2^{3221312212001} is an apocalyptic number.

It is an amenable number.

3221312212001 is a deficient number, since it is larger than the sum of its proper divisors (247793247091).

3221312212001 is a wasteful number, since it uses less digits than its factorization.

3221312212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247793247090.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3221312212001 its reverse (1002122131223), we get a palindrome (4223434343224).

The spelling of 3221312212001 in words is "three trillion, two hundred twenty-one billion, three hundred twelve million, two hundred twelve thousand, one".