20020102021000 has 64 divisors (see below), whose sum is σ = 46889980824960. Its totient is φ = 8000700280000.

The previous prime is 20020102020959. The next prime is 20020102021009. The reversal of 20020102021000 is 12020102002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20020102021009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8084116 + ... + 10266115.

It is an arithmetic number, because the mean of its divisors is an integer number (732655950390).

Almost surely, 2^{20020102021000} is an apocalyptic number.

20020102021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020102021000 is an abundant number, since it is smaller than the sum of its proper divisors (26869878803960).

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

20020102021000 is a wasteful number, since it uses less digits than its factorization.

20020102021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351343 (or 18351329 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20020102021000 its reverse (12020102002), we get a palindrome (20032122123002).

The spelling of 20020102021000 in words is "twenty trillion, twenty billion, one hundred two million, twenty-one thousand".