22011211201220 has 24 divisors (see below), whose sum is σ = 46517961003864. Its totient is φ = 8748404960256.

The previous prime is 22011211201181. The next prime is 22011211201253. The reversal of 22011211201220 is 2210211211022.

It can be written as a sum of positive squares in 4 ways, for example, as 379261368964 + 21631949832256 = 615842^2 + 4651016^2 .

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 7 ways as a sum of consecutive naturals, for example, 3504966797 + ... + 3504973076.

It is an arithmetic number, because the mean of its divisors is an integer number (1938248375161).

Almost surely, 2^{22011211201220} is an apocalyptic number.

22011211201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011211201220 is an abundant number, since it is smaller than the sum of its proper divisors (24506749802644).

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

22011211201220 is a wasteful number, since it uses less digits than its factorization.

22011211201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009940039 (or 7009940037 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22011211201220 its reverse (2210211211022), we get a palindrome (24221422412242).

The spelling of 22011211201220 in words is "twenty-two trillion, eleven billion, two hundred eleven million, two hundred one thousand, two hundred twenty".