121212201012 has 72 divisors (see below), whose sum is σ = 332968589856. Its totient is φ = 34214789952.

The previous prime is 121212200983. The next prime is 121212201079. The reversal of 121212201012 is 210102212121.

It is a junction number, because it is equal to n+sod(n) for n = 121212200982 and 121212201000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1193023 + ... + 1290630.

It is an arithmetic number, because the mean of its divisors is an integer number (4624563748).

Almost surely, 2^121212201012 is an apocalyptic number.

121212201012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121212201012 is an abundant number, since it is smaller than the sum of its proper divisors (211756388844).

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

121212201012 is a wasteful number, since it uses less digits than its factorization.

121212201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483757 (or 2483748 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121212201012 its reverse (210102212121), we get a palindrome (331314413133).

The spelling of 121212201012 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred one thousand, twelve".