20220111001220 has 96 divisors (see below), whose sum is σ = 46062415905408. Its totient is φ = 7411569518592.

The previous prime is 20220111001157. The next prime is 20220111001271. The reversal of 20220111001220 is 2210011102202.

It is a junction number, because it is equal to n+sod(n) for n = 20220111001195 and 20220111001204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19986284 + ... + 20973596.

It is an arithmetic number, because the mean of its divisors is an integer number (479816832348).

Almost surely, 2^{20220111001220} is an apocalyptic number.

20220111001220 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 20220111001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23031207952704).

20220111001220 is an abundant number, since it is smaller than the sum of its proper divisors (25842304904188).

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

20220111001220 is a wasteful number, since it uses less digits than its factorization.

20220111001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987909 (or 987907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20220111001220 its reverse (2210011102202), we get a palindrome (22430122103422).

The spelling of 20220111001220 in words is "twenty trillion, two hundred twenty billion, one hundred eleven million, one thousand, two hundred twenty".