121212430044 has 24 divisors (see below), whose sum is σ = 282849709968. Its totient is φ = 40401185280.

The previous prime is 121212430033. The next prime is 121212430081. The reversal of 121212430044 is 440034212121.

It is a junction number, because it is equal to n+sod(n) for n = 121212429996 and 121212430023.

It is a congruent number.

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, 195747 + ... + 529850.

It is an arithmetic number, because the mean of its divisors is an integer number (11785404582).

Almost surely, 2^121212430044 is an apocalyptic number.

It is an amenable number.

121212430044 is an abundant number, since it is smaller than the sum of its proper divisors (161637279924).

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

121212430044 is a wasteful number, since it uses less digits than its factorization.

121212430044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739525 (or 739523 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121212430044 its reverse (440034212121), we get a palindrome (561246642165).

The spelling of 121212430044 in words is "one hundred twenty-one billion, two hundred twelve million, four hundred thirty thousand, forty-four".