20022011200 has 126 divisors (see below), whose sum is σ = 49776900446. Its totient is φ = 7926696960.

The previous prime is 20022011189. The next prime is 20022011201. The reversal of 20022011200 is 211022002.

It can be written as a sum of positive squares in 3 ways, for example, as 6067786816 + 13954224384 = 77896^2 + 118128^2 .

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 (20022011201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18317854 + ... + 18318946.

Almost surely, 2^20022011200 is an apocalyptic number.

20022011200 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 20022011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24888450223).

20022011200 is an abundant number, since it is smaller than the sum of its proper divisors (29754889246).

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

20022011200 is a wasteful number, since it uses less digits than its factorization.

20022011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1207 counting only the distinct ones).

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

Adding to 20022011200 its reverse (211022002), we get a palindrome (20233033202).

The spelling of 20022011200 in words is "twenty billion, twenty-two million, eleven thousand, two hundred".