311102221012 has 24 divisors (see below), whose sum is σ = 594804978432. Its totient is φ = 141199968000.

The previous prime is 311102220991. The next prime is 311102221043. The reversal of 311102221012 is 210122201113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5223364 + ... + 5282587.

It is an arithmetic number, because the mean of its divisors is an integer number (24783540768).

Almost surely, 2^311102221012 is an apocalyptic number.

It is an amenable number.

311102221012 is a deficient number, since it is larger than the sum of its proper divisors (283702757420).

311102221012 is a wasteful number, since it uses less digits than its factorization.

311102221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506639 (or 10506637 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 311102221012 its reverse (210122201113), we get a palindrome (521224422125).

The spelling of 311102221012 in words is "three hundred eleven billion, one hundred two million, two hundred twenty-one thousand, twelve".