311121232121116 has 48 divisors (see below), whose sum is σ = 575312468572800. Its totient is φ = 146977277662208.

The previous prime is 311121232121113. The next prime is 311121232121137. The reversal of 311121232121116 is 611121232121113.

It is a super-2 number, since 2×311121232121116² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311121232121111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29553030 + ... + 38673298.

It is an arithmetic number, because the mean of its divisors is an integer number (11985676428600).

Almost surely, 2^{311121232121116} is an apocalyptic number.

It is an amenable number.

311121232121116 is a deficient number, since it is larger than the sum of its proper divisors (264191236451684).

311121232121116 is a wasteful number, since it uses less digits than its factorization.

311121232121116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126606 (or 9126604 counting only the distinct ones).

The product of its digits is 864, while the sum is 28.

Adding to 311121232121116 its reverse (611121232121113), we get a palindrome (922242464242229).

The spelling of 311121232121116 in words is "three hundred eleven trillion, one hundred twenty-one billion, two hundred thirty-two million, one hundred twenty-one thousand, one hundred sixteen".