20000021022000 has 240 divisors, whose sum is σ = 69868036454112. Its totient is φ = 5332221964800.

The previous prime is 20000021021989. The next prime is 20000021022001. The reversal of 20000021022000 is 22012000002.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20000021022001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87672087 + ... + 87899913.

Almost surely, 2^{20000021022000} is an apocalyptic number.

20000021022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000021022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34934018227056).

20000021022000 is an abundant number, since it is smaller than the sum of its proper divisors (49868015432112).

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

20000021022000 is a wasteful number, since it uses less digits than its factorization.

20000021022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232733 (or 232714 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20000021022000 its reverse (22012000002), we get a palindrome (20022033022002).

The spelling of 20000021022000 in words is "twenty trillion, twenty-one million, twenty-two thousand".