20020100221000 has 64 divisors (see below), whose sum is σ = 51105855864960. Its totient is φ = 7280036440000.

The previous prime is 20020100220973. The next prime is 20020100221087. The reversal of 20020100221000 is 12200102002.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909993556 + ... + 910015555.

It is an arithmetic number, because the mean of its divisors is an integer number (798528997890).

Almost surely, 2^{20020100221000} is an apocalyptic number.

20020100221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020100221000 is an abundant number, since it is smaller than the sum of its proper divisors (31085755643960).

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

20020100221000 is a wasteful number, since it uses less digits than its factorization.

20020100221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820009143 (or 1820009129 counting only the distinct ones).

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

Adding to 20020100221000 its reverse (12200102002), we get a palindrome (20032300323002).

It can be divided in two parts, 200201002 and 21000, that added together give a palindrome (200222002).

The spelling of 20020100221000 in words is "twenty trillion, twenty billion, one hundred million, two hundred twenty-one thousand".