20201200022220 has 384 divisors, whose sum is σ = 70670388805632. Its totient is φ = 4204663603200.

The previous prime is 20201200022137. The next prime is 20201200022287. The reversal of 20201200022220 is 2222000210202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20201200022220.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1410592660 + ... + 1410606980.

It is an arithmetic number, because the mean of its divisors is an integer number (184037470848).

Almost surely, 2^{20201200022220} is an apocalyptic number.

20201200022220 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 20201200022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35335194402816).

20201200022220 is an abundant number, since it is smaller than the sum of its proper divisors (50469188783412).

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

20201200022220 is a wasteful number, since it uses less digits than its factorization.

20201200022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20761 (or 20759 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20201200022220 its reverse (2222000210202), we get a palindrome (22423200232422).

The spelling of 20201200022220 in words is "twenty trillion, two hundred one billion, two hundred million, twenty-two thousand, two hundred twenty".