20212210000 has 100 divisors (see below), whose sum is σ = 49062235684. Its totient is φ = 8064000000.

The previous prime is 20212209989. The next prime is 20212210001. The reversal of 20212210000 is 1221202.

It can be written as a sum of positive squares in 10 ways, for example, as 19547395344 + 664814656 = 139812^2 + 25784^2 .

It is a tau number, because it is divible by the number of its divisors (100).

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 (20212210001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4207600 + ... + 4212400.

Almost surely, 2^20212210000 is an apocalyptic number.

20212210000 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 20212210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24531117842).

20212210000 is an abundant number, since it is smaller than the sum of its proper divisors (28850025684).

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

20212210000 is an equidigital number, since it uses as much as digits as its factorization.

20212210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250 (or 5229 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20212210000 its reverse (1221202), we get a palindrome (20213431202).

The spelling of 20212210000 in words is "twenty billion, two hundred twelve million, two hundred ten thousand".