22020300131220 has 72 divisors (see below), whose sum is σ = 69098183186760. Its totient is φ = 5669594515200.

The previous prime is 22020300131101. The next prime is 22020300131231. The reversal of 22020300131220 is 2213100302022.

22020300131220 is a `hidden beast` number, since 220 + 20 + 300 + 1 + 3 + 122 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2126148929424 + 19894151201796 = 1458132^2 + 4460286^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22020300131193 and 22020300131202.

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, 2109218931 + ... + 2109229370.

It is an arithmetic number, because the mean of its divisors is an integer number (959696988705).

Almost surely, 2^{22020300131220} is an apocalyptic number.

22020300131220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020300131220 is an abundant number, since it is smaller than the sum of its proper divisors (47077883055540).

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

22020300131220 is a wasteful number, since it uses less digits than its factorization.

22020300131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218448345 (or 4218448340 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22020300131220 its reverse (2213100302022), we get a palindrome (24233400433242).

The spelling of 22020300131220 in words is "twenty-two trillion, twenty billion, three hundred million, one hundred thirty-one thousand, two hundred twenty".