20210011000 has 64 divisors (see below), whose sum is σ = 47376744480. Its totient is φ = 8069420800.

The previous prime is 20210010973. The next prime is 20210011001. The reversal of 20210011000 is 11001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545052 + ... + 580948.

Almost surely, 2^20210011000 is an apocalyptic number.

20210011000 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 20210011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23688372240).

20210011000 is an abundant number, since it is smaller than the sum of its proper divisors (27166733480).

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

20210011000 is a wasteful number, since it uses less digits than its factorization.

20210011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36481 (or 36467 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20210011000 its reverse (11001202), we get a palindrome (20221012202).

The spelling of 20210011000 in words is "twenty billion, two hundred ten million, eleven thousand".