20122201200 has 120 divisors (see below), whose sum is σ = 64567683376. Its totient is φ = 5356800000.

The previous prime is 20122201171. The next prime is 20122201247. The reversal of 20122201200 is 210222102.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×20122201200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707250 + ... + 735150.

Almost surely, 2^20122201200 is an apocalyptic number.

20122201200 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 20122201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32283841688).

20122201200 is an abundant number, since it is smaller than the sum of its proper divisors (44445482176).

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

20122201200 is a wasteful number, since it uses less digits than its factorization.

20122201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28523 (or 28512 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20122201200 its reverse (210222102), we get a palindrome (20332423302).

The spelling of 20122201200 in words is "twenty billion, one hundred twenty-two million, two hundred one thousand, two hundred".