121101120012 has 24 divisors (see below), whose sum is σ = 282581139456. Its totient is φ = 40365345808.

The previous prime is 121101120011. The next prime is 121101120053. The reversal of 121101120012 is 210021101121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 121101120012.

It is not an unprimeable number, because it can be changed into a prime (121101120011) 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, 105013 + ... + 503219.

It is an arithmetic number, because the mean of its divisors is an integer number (11774214144).

Almost surely, 2^121101120012 is an apocalyptic number.

121101120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121101120012 is an abundant number, since it is smaller than the sum of its proper divisors (161480019444).

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

121101120012 is a wasteful number, since it uses less digits than its factorization.

121101120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423557 (or 423555 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121101120012 its reverse (210021101121), we get a palindrome (331122221133).

The spelling of 121101120012 in words is "one hundred twenty-one billion, one hundred one million, one hundred twenty thousand, twelve".