3211112003221 has 2 divisors, whose sum is σ = 3211112003222. Its totient is φ = 3211112003220.

The previous prime is 3211112003213. The next prime is 3211112003269. The reversal of 3211112003221 is 1223002111123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2951475896196 + 259636107025 = 1717986^2 + 509545^2 .

It is a cyclic number.

It is not a de Polignac number, because 3211112003221 - 2³ = 3211112003213 is a prime.

It is a super-2 number, since 2×3211112003221² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3211112001221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1605556001610 + 1605556001611.

It is an arithmetic number, because the mean of its divisors is an integer number (1605556001611).

Almost surely, 2^{3211112003221} is an apocalyptic number.

It is an amenable number.

3211112003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3211112003221 is an equidigital number, since it uses as much as digits as its factorization.

3211112003221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 3211112003221 its reverse (1223002111123), we get a palindrome (4434114114344).

The spelling of 3211112003221 in words is "three trillion, two hundred eleven billion, one hundred twelve million, three thousand, two hundred twenty-one".