20001001200222 has 256 divisors, whose sum is σ = 51052875374592. Its totient is φ = 5093362114560.

The previous prime is 20001001200209. The next prime is 20001001200223. The reversal of 20001001200222 is 22200210010002.

It is a super-2 number, since 2×20001001200222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001001200198 and 20001001200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001001200223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 224693428 + ... + 224782424.

It is an arithmetic number, because the mean of its divisors is an integer number (199425294432).

Almost surely, 2^{20001001200222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001001200222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25526437687296).

20001001200222 is an abundant number, since it is smaller than the sum of its proper divisors (31051874174370).

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

20001001200222 is a wasteful number, since it uses less digits than its factorization.

20001001200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89291.

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

Adding to 20001001200222 its reverse (22200210010002), we get a palindrome (42201211210224).

The spelling of 20001001200222 in words is "twenty trillion, one billion, one million, two hundred thousand, two hundred twenty-two".