20011022000 has 40 divisors (see below), whose sum is σ = 48386656032. Its totient is φ = 8004408000.

The previous prime is 20011021991. The next prime is 20011022039. The reversal of 20011022000 is 22011002.

It is a tau number, because it is divible by the number of its divisors (40).

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, 5000756 + ... + 5004755.

Almost surely, 2^20011022000 is an apocalyptic number.

20011022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011022000 is an abundant number, since it is smaller than the sum of its proper divisors (28375634032).

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

20011022000 is a wasteful number, since it uses less digits than its factorization.

20011022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005534 (or 10005518 counting only the distinct ones).

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

Adding to 20011022000 its reverse (22011002), we get a palindrome (20033033002).

The spelling of 20011022000 in words is "twenty billion, eleven million, twenty-two thousand".