121020020012 has 12 divisors (see below), whose sum is σ = 215780979456. Its totient is φ = 59368311600.

The previous prime is 121020019993. The next prime is 121020020027. The reversal of 121020020012 is 210020020121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121020019975 and 121020020002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285424364 + ... + 285424787.

It is an arithmetic number, because the mean of its divisors is an integer number (17981748288).

Almost surely, 2^121020020012 is an apocalyptic number.

It is an amenable number.

121020020012 is a deficient number, since it is larger than the sum of its proper divisors (94760959444).

121020020012 is a wasteful number, since it uses less digits than its factorization.

121020020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570849208 (or 570849206 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121020020012 its reverse (210020020121), we get a palindrome (331040040133).

The spelling of 121020020012 in words is "one hundred twenty-one billion, twenty million, twenty thousand, twelve".