311222020010201 has 4 divisors (see below), whose sum is σ = 311249666998452. Its totient is φ = 311194373021952.

The previous prime is 311222020010197. The next prime is 311222020010227. The reversal of 311222020010201 is 102010020222113.

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 288733331544025 + 22488688466176 = 16992155^2 + 4742224^2 .

It is a cyclic number.

It is not a de Polignac number, because 311222020010201 - 2² = 311222020010197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311222020010201.

It is not an unprimeable number, because it can be changed into a prime (311222020010701) 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, 13823477240 + ... + 13823499753.

It is an arithmetic number, because the mean of its divisors is an integer number (77812416749613).

Almost surely, 2^{311222020010201} is an apocalyptic number.

It is an amenable number.

311222020010201 is a deficient number, since it is larger than the sum of its proper divisors (27646988251).

311222020010201 is a wasteful number, since it uses less digits than its factorization.

311222020010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27646988250.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 311222020010201 its reverse (102010020222113), we get a palindrome (413232040232314).

The spelling of 311222020010201 in words is "three hundred eleven trillion, two hundred twenty-two billion, twenty million, ten thousand, two hundred one".