331211012201 has 2 divisors, whose sum is σ = 331211012202. Its totient is φ = 331211012200.

The previous prime is 331211012191. The next prime is 331211012219. The reversal of 331211012201 is 102210112133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258774672601 + 72436339600 = 508699^2 + 269140^2 .

It is an emirp because it is prime and its reverse (102210112133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331211012201 - 2³⁴ = 314031143017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331211012201.

It is not a weakly prime, because it can be changed into another prime (331211012501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165605506100 + 165605506101.

It is an arithmetic number, because the mean of its divisors is an integer number (165605506101).

Almost surely, 2^331211012201 is an apocalyptic number.

It is an amenable number.

331211012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

331211012201 is an equidigital number, since it uses as much as digits as its factorization.

331211012201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 331211012201 its reverse (102210112133), we get a palindrome (433421124334).

The spelling of 331211012201 in words is "three hundred thirty-one billion, two hundred eleven million, twelve thousand, two hundred one".