121211121112 has 32 divisors (see below), whose sum is σ = 239368608000. Its totient is φ = 57428746144.

The previous prime is 121211121067. The next prime is 121211121113. The reversal of 121211121112 is 211121112121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058612 + ... + 3097987.

It is an arithmetic number, because the mean of its divisors is an integer number (7480269000).

Almost surely, 2^121211121112 is an apocalyptic number.

It is an amenable number.

121211121112 is a deficient number, since it is larger than the sum of its proper divisors (118157486888).

121211121112 is a wasteful number, since it uses less digits than its factorization.

121211121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156735 (or 6156731 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 121211121112 its reverse (211121112121), we get a palindrome (332332233233).

It can be divided in two parts, 121 and 211121112, that multiplied together give a palindrome (25545654552).

The spelling of 121211121112 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twelve".