311222022011 has 4 divisors (see below), whose sum is σ = 311224294800. Its totient is φ = 311219749224.

The previous prime is 311222021947. The next prime is 311222022029. The reversal of 311222022011 is 110220222113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110220222113 = 34283 ⋅3215011.

It is a cyclic number.

It is not a de Polignac number, because 311222022011 - 2⁶ = 311222021947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311222022071) 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, 916856 + ... + 1209573.

It is an arithmetic number, because the mean of its divisors is an integer number (77806073700).

Almost surely, 2^311222022011 is an apocalyptic number.

311222022011 is a deficient number, since it is larger than the sum of its proper divisors (2272789).

311222022011 is a wasteful number, since it uses less digits than its factorization.

311222022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272788.

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

Adding to 311222022011 its reverse (110220222113), we get a palindrome (421442244124).

The spelling of 311222022011 in words is "three hundred eleven billion, two hundred twenty-two million, twenty-two thousand, eleven".