121244240203120 has 80 divisors (see below), whose sum is σ = 288951186877920. Its totient is φ = 47284858368000.

The previous prime is 121244240203067. The next prime is 121244240203157. The reversal of 121244240203120 is 21302042442121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6525981 + ... + 16884220.

It is an arithmetic number, because the mean of its divisors is an integer number (3611889835974).

Almost surely, 2^{121244240203120} is an apocalyptic number.

121244240203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121244240203120 is an abundant number, since it is smaller than the sum of its proper divisors (167706946674800).

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

121244240203120 is a wasteful number, since it uses less digits than its factorization.

121244240203120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23411834 (or 23411828 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 121244240203120 its reverse (21302042442121), we get a palindrome (142546282645241).

The spelling of 121244240203120 in words is "one hundred twenty-one trillion, two hundred forty-four billion, two hundred forty million, two hundred three thousand, one hundred twenty".