121173610000 has 125 divisors (see below), whose sum is σ = 298431589291. Its totient is φ = 47647928000.

The previous prime is 121173609979. The next prime is 121173610009. The reversal of 121173610000 is 16371121.

The square root of 121173610000 is 348100.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 9500011024 + 111673598976 = 97468^2 + 334176^2 .

It is a tau number, because it is divible by the number of its divisors (125).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121173610009) by changing a digit.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 2053789971 + ... + 2053790029.

Almost surely, 2^121173610000 is an apocalyptic number.

121173610000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121173610000 is the 348100-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121173610000

121173610000 is an abundant number, since it is smaller than the sum of its proper divisors (177257979291).

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

121173610000 is an frugal number, since it uses more digits than its factorization.

121173610000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 121173610000 its reverse (16371121), we get a palindrome (121189981121).

The spelling of 121173610000 in words is "one hundred twenty-one billion, one hundred seventy-three million, six hundred ten thousand".