121623502320 has 280 divisors, whose sum is σ = 425411636496. Its totient is φ = 32322530304.

The previous prime is 121623502307. The next prime is 121623502321. The reversal of 121623502320 is 23205326121.

It is a happy number.

121623502320 is a `hidden beast` number, since 1 + 2 + 1 + 623 + 5 + 0 + 2 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121623502321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 17900844 + ... + 17907636.

Almost surely, 2^121623502320 is an apocalyptic number.

121623502320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121623502320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212705818248).

121623502320 is an abundant number, since it is smaller than the sum of its proper divisors (303788134176).

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

121623502320 is an equidigital number, since it uses as much as digits as its factorization.

121623502320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131 (or 7110 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 121623502320 its reverse (23205326121), we get a palindrome (144828828441).

The spelling of 121623502320 in words is "one hundred twenty-one billion, six hundred twenty-three million, five hundred two thousand, three hundred twenty".