200102000021020 has 24 divisors (see below), whose sum is σ = 421150089150000. Its totient is φ = 79862535416832.

The previous prime is 200102000020999. The next prime is 200102000021059. The reversal of 200102000021020 is 20120000201002.

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

It is a junction number, because it is equal to n+sod(n) for n = 200102000020988 and 200102000021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11141527770 + ... + 11141545729.

It is an arithmetic number, because the mean of its divisors is an integer number (17547920381250).

Almost surely, 2^{200102000021020} is an apocalyptic number.

200102000021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200102000021020 is an abundant number, since it is smaller than the sum of its proper divisors (221048089128980).

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

200102000021020 is a wasteful number, since it uses less digits than its factorization.

200102000021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22283073957 (or 22283073955 counting only the distinct ones).

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

Adding to 200102000021020 its reverse (20120000201002), we get a palindrome (220222000222022).

The spelling of 200102000021020 in words is "two hundred trillion, one hundred two billion, twenty-one thousand, twenty".