20211011000 has 128 divisors (see below), whose sum is σ = 50264660160. Its totient is φ = 7580160000.

The previous prime is 20211010997. The next prime is 20211011003. The reversal of 20211011000 is 11011202.

It is an interprime number because it is at equal distance from previous prime (20211010997) and next prime (20211011003).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211011003) 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, 4808900 + ... + 4813100.

Almost surely, 2^20211011000 is an apocalyptic number.

20211011000 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 20211011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25132330080).

20211011000 is an abundant number, since it is smaller than the sum of its proper divisors (30053649160).

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

20211011000 is a wasteful number, since it uses less digits than its factorization.

20211011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522 (or 4508 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20211011000 its reverse (11011202), we get a palindrome (20222022202).

The spelling of 20211011000 in words is "twenty billion, two hundred eleven million, eleven thousand".