121023201042000 has 480 divisors, whose sum is σ = 447858303984000. Its totient is φ = 30354072268800.

The previous prime is 121023201041999. The next prime is 121023201042013. The reversal of 121023201042000 is 240102320121.

It is a happy number.

121023201042000 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 232 + 0 + 10 + 420 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 458562079 + ... + 458825921.

It is an arithmetic number, because the mean of its divisors is an integer number (933038133300).

Almost surely, 2^{121023201042000} is an apocalyptic number.

121023201042000 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 121023201042000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223929151992000).

121023201042000 is an abundant number, since it is smaller than the sum of its proper divisors (326835102942000).

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

121023201042000 is a wasteful number, since it uses less digits than its factorization.

121023201042000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265388 (or 265369 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121023201042000 its reverse (240102320121), we get a palindrome (121263303362121).

The spelling of 121023201042000 in words is "one hundred twenty-one trillion, twenty-three billion, two hundred one million, forty-two thousand".