121730500231 has 8 divisors (see below), whose sum is σ = 126743794128. Its totient is φ = 116814552000.

The previous prime is 121730500211. The next prime is 121730500249. The reversal of 121730500231 is 132005037121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121730500231 - 2¹⁹ = 121729975943 is a prime.

It is a super-2 number, since 2×121730500231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121730500196 and 121730500205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121730500211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24333865 + ... + 24338866.

It is an arithmetic number, because the mean of its divisors is an integer number (15842974266).

Almost surely, 2^121730500231 is an apocalyptic number.

121730500231 is a deficient number, since it is larger than the sum of its proper divisors (5013293897).

121730500231 is an equidigital number, since it uses as much as digits as its factorization.

121730500231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48672833.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 121730500231 its reverse (132005037121), we get a palindrome (253735537352).

The spelling of 121730500231 in words is "one hundred twenty-one billion, seven hundred thirty million, five hundred thousand, two hundred thirty-one".