121323123223000 has 256 divisors, whose sum is σ = 300065306112000. Its totient is φ = 45820082880000.

The previous prime is 121323123222971. The next prime is 121323123223009. The reversal of 121323123223000 is 322321323121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323123223009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11390767675 + ... + 11390778325.

It is an arithmetic number, because the mean of its divisors is an integer number (1172130102000).

Almost surely, 2^{121323123223000} is an apocalyptic number.

121323123223000 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 121323123223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150032653056000).

121323123223000 is an abundant number, since it is smaller than the sum of its proper divisors (178742182889000).

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

121323123223000 is a wasteful number, since it uses less digits than its factorization.

121323123223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17043 (or 17029 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 121323123223000 its reverse (322321323121), we get a palindrome (121645444546121).

The spelling of 121323123223000 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, one hundred twenty-three million, two hundred twenty-three thousand".