121023201321000 has 768 divisors, whose sum is σ = 460957822790400. Its totient is φ = 28380858624000.

The previous prime is 121023201320921. The next prime is 121023201321031. The reversal of 121023201321000 is 123102320121.

121023201321000 is a `hidden beast` number, since 1 + 21 + 0 + 2 + 320 + 1 + 321 + 0 + 0 + 0 = 666.

121023201321000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121023201321000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 633603511 + ... + 633794489.

It is an arithmetic number, because the mean of its divisors is an integer number (600205498425).

Almost surely, 2^{121023201321000} is an apocalyptic number.

121023201321000 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 121023201321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230478911395200).

121023201321000 is an abundant number, since it is smaller than the sum of its proper divisors (339934621469400).

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

121023201321000 is a wasteful number, since it uses less digits than its factorization.

121023201321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191227 (or 191210 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121023201321000 its reverse (123102320121), we get a palindrome (121146303641121).

The spelling of 121023201321000 in words is "one hundred twenty-one trillion, twenty-three billion, two hundred one million, three hundred twenty-one thousand".