121042136600 has 96 divisors (see below), whose sum is σ = 350865043200. Its totient is φ = 37727414400.

The previous prime is 121042136557. The next prime is 121042136603. The reversal of 121042136600 is 6631240121.

It is a self number, because there is not a number n which added to its sum of digits gives 121042136600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121042136603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3914540 + ... + 3945339.

It is an arithmetic number, because the mean of its divisors is an integer number (3654844200).

Almost surely, 2^121042136600 is an apocalyptic number.

121042136600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121042136600 is an abundant number, since it is smaller than the sum of its proper divisors (229822906600).

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

121042136600 is a wasteful number, since it uses less digits than its factorization.

121042136600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7859913 (or 7859904 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 121042136600 its reverse (6631240121), we get a palindrome (127673376721).

The spelling of 121042136600 in words is "one hundred twenty-one billion, forty-two million, one hundred thirty-six thousand, six hundred".