121100111220012 has 12 divisors (see below), whose sum is σ = 282566926180056. Its totient is φ = 40366703740000.

The previous prime is 121100111219977. The next prime is 121100111220017. The reversal of 121100111220012 is 210022111001121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121100111219973 and 121100111220000.

It is not an unprimeable number, because it can be changed into a prime (121100111220017) 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, 5045837967489 + ... + 5045837967512.

It is an arithmetic number, because the mean of its divisors is an integer number (23547243848338).

Almost surely, 2^{121100111220012} is an apocalyptic number.

121100111220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121100111220012 is an abundant number, since it is smaller than the sum of its proper divisors (161466814960044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121100111220012 is a wasteful number, since it uses less digits than its factorization.

121100111220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091675935008 (or 10091675935006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121100111220012 its reverse (210022111001121), we get a palindrome (331122222221133).

The spelling of 121100111220012 in words is "one hundred twenty-one trillion, one hundred billion, one hundred eleven million, two hundred twenty thousand, twelve".