121213020012 has 24 divisors (see below), whose sum is σ = 323234720256. Its totient is φ = 34632291408.

The previous prime is 121213020007. The next prime is 121213020037. The reversal of 121213020012 is 210020312121.

121213020012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121213019973 and 121213020000.

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, 721505988 + ... + 721506155.

It is an arithmetic number, because the mean of its divisors is an integer number (13468113344).

Almost surely, 2^121213020012 is an apocalyptic number.

121213020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121213020012 is an abundant number, since it is smaller than the sum of its proper divisors (202021700244).

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

121213020012 is a wasteful number, since it uses less digits than its factorization.

121213020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443012157 (or 1443012155 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121213020012 its reverse (210020312121), we get a palindrome (331233332133).

The spelling of 121213020012 in words is "one hundred twenty-one billion, two hundred thirteen million, twenty thousand, twelve".