20030021121000 has 128 divisors (see below), whose sum is σ = 68174908364160. Its totient is φ = 4855762688000.

The previous prime is 20030021120999. The next prime is 20030021121001. The reversal of 20030021121000 is 12112003002.

It is an interprime number because it is at equal distance from previous prime (20030021120999) and next prime (20030021121001).

It is a super-2 number, since 2×20030021121000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20030021121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303452169 + ... + 303518168.

It is an arithmetic number, because the mean of its divisors is an integer number (532616471595).

Almost surely, 2^{20030021121000} is an apocalyptic number.

20030021121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030021121000 is an abundant number, since it is smaller than the sum of its proper divisors (48144887243160).

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

20030021121000 is a wasteful number, since it uses less digits than its factorization.

20030021121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606970372 (or 606970358 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20030021121000 its reverse (12112003002), we get a palindrome (20042133124002).

The spelling of 20030021121000 in words is "twenty trillion, thirty billion, twenty-one million, one hundred twenty-one thousand".