3112201400221 has 2 divisors, whose sum is σ = 3112201400222. Its totient is φ = 3112201400220.

The previous prime is 3112201400219. The next prime is 3112201400233. The reversal of 3112201400221 is 1220041022113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2077273625625 + 1034927774596 = 1441275^2 + 1017314^2 .

It is a cyclic number.

It is not a de Polignac number, because 3112201400221 - 2¹ = 3112201400219 is a prime.

It is a super-3 number, since 3×3112201400221³ (a number of 38 digits) contains 333 as substring.

Together with 3112201400219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3112201400201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556100700110 + 1556100700111.

It is an arithmetic number, because the mean of its divisors is an integer number (1556100700111).

Almost surely, 2^{3112201400221} is an apocalyptic number.

It is an amenable number.

3112201400221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3112201400221 is an equidigital number, since it uses as much as digits as its factorization.

3112201400221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 3112201400221 its reverse (1220041022113), we get a palindrome (4332242422334).

The spelling of 3112201400221 in words is "three trillion, one hundred twelve billion, two hundred one million, four hundred thousand, two hundred twenty-one".