20000021201000 has 32 divisors (see below), whose sum is σ = 46800049612680. Its totient is φ = 8000008480000.

The previous prime is 20000021200997. The next prime is 20000021201059. The reversal of 20000021201000 is 10212000002.

It can be written as a sum of positive squares in 4 ways, for example, as 3664827811876 + 16335193389124 = 1914374^2 + 4041682^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 10000009601 + ... + 10000011600.

Almost surely, 2^{20000021201000} is an apocalyptic number.

20000021201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000021201000 is an abundant number, since it is smaller than the sum of its proper divisors (26800028411680).

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

20000021201000 is a wasteful number, since it uses less digits than its factorization.

20000021201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000021222 (or 20000021208 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20000021201000 its reverse (10212000002), we get a palindrome (20010233201002).

The spelling of 20000021201000 in words is "twenty trillion, twenty-one million, two hundred one thousand".