311022021122012 has 12 divisors (see below), whose sum is σ = 544293576821736. Its totient is φ = 155509570601520.

The previous prime is 311022021121963. The next prime is 311022021122017. The reversal of 311022021122012 is 210221120220113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311022021122017) 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, 359503814 + ... + 360367917.

It is an arithmetic number, because the mean of its divisors is an integer number (45357798068478).

Almost surely, 2^{311022021122012} is an apocalyptic number.

It is an amenable number.

311022021122012 is a deficient number, since it is larger than the sum of its proper divisors (233271555699724).

311022021122012 is a wasteful number, since it uses less digits than its factorization.

311022021122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719979748 (or 719979746 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 311022021122012 its reverse (210221120220113), we get a palindrome (521243141342125).

The spelling of 311022021122012 in words is "three hundred eleven trillion, twenty-two billion, twenty-one million, one hundred twenty-two thousand, twelve".