20001022111000 has 128 divisors (see below), whose sum is σ = 55814032834560. Its totient is φ = 6559341360000.

The previous prime is 20001022110961. The next prime is 20001022111003. The reversal of 20001022111000 is 11122010002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001022111003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61953976 + ... + 62275975.

It is an arithmetic number, because the mean of its divisors is an integer number (436047131520).

Almost surely, 2^{20001022111000} is an apocalyptic number.

20001022111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001022111000 is an abundant number, since it is smaller than the sum of its proper divisors (35813010723560).

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

20001022111000 is a wasteful number, since it uses less digits than its factorization.

20001022111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124230002 (or 124229988 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001022111000 its reverse (11122010002), we get a palindrome (20012144121002).

The spelling of 20001022111000 in words is "twenty trillion, one billion, twenty-two million, one hundred eleven thousand".