121330134120 has 128 divisors (see below), whose sum is σ = 393025852800. Its totient is φ = 29786932224.

The previous prime is 121330134103. The next prime is 121330134131. The reversal of 121330134120 is 21431033121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488634 + ... + 693846.

It is an arithmetic number, because the mean of its divisors is an integer number (3070514475).

Almost surely, 2^121330134120 is an apocalyptic number.

121330134120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121330134120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196512926400).

121330134120 is an abundant number, since it is smaller than the sum of its proper divisors (271695718680).

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

121330134120 is a wasteful number, since it uses less digits than its factorization.

121330134120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205619 (or 205615 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121330134120 its reverse (21431033121), we get a palindrome (142761167241).

It can be divided in two parts, 1213301 and 34120, that added together give a palindrome (1247421).

The spelling of 121330134120 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred thirty-four thousand, one hundred twenty".