121212313030 has 16 divisors (see below), whose sum is σ = 218286744480. Its totient is φ = 48461684992.

The previous prime is 121212312971. The next prime is 121212313049. The reversal of 121212313030 is 30313212121.

It is a junction number, because it is equal to n+sod(n) for n = 121212312989 and 121212313007.

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, 2883115 + ... + 2924854.

It is an arithmetic number, because the mean of its divisors is an integer number (13642921530).

Almost surely, 2^121212313030 is an apocalyptic number.

121212313030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212313030 is a deficient number, since it is larger than the sum of its proper divisors (97074431450).

121212313030 is a wasteful number, since it uses less digits than its factorization.

121212313030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810063.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121212313030 its reverse (30313212121), we get a palindrome (151525525151).

The spelling of 121212313030 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred thirteen thousand, thirty".