121501002423 has 8 divisors (see below), whose sum is σ = 162003956608. Its totient is φ = 80999358264.

The previous prime is 121501002391. The next prime is 121501002433. The reversal of 121501002423 is 324200105121.

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

It is not a de Polignac number, because 121501002423 - 2⁵ = 121501002391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121501002423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121501002433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85561 + ... + 500322.

It is an arithmetic number, because the mean of its divisors is an integer number (20250494576).

Almost surely, 2^121501002423 is an apocalyptic number.

121501002423 is a deficient number, since it is larger than the sum of its proper divisors (40502954185).

121501002423 is an equidigital number, since it uses as much as digits as its factorization.

121501002423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655013.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 121501002423 its reverse (324200105121), we get a palindrome (445701107544).

The spelling of 121501002423 in words is "one hundred twenty-one billion, five hundred one million, two thousand, four hundred twenty-three".