22012212201220 has 48 divisors (see below), whose sum is σ = 47885157860400. Its totient is φ = 8493613230080.

The previous prime is 22012212201211. The next prime is 22012212201241. The reversal of 22012212201220 is 2210221221022.

It can be written as a sum of positive squares in 8 ways, for example, as 11662402580676 + 10349809620544 = 3415026^2 + 3217112^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150736915 + ... + 150882874.

It is an arithmetic number, because the mean of its divisors is an integer number (997607455425).

Almost surely, 2^{22012212201220} is an apocalyptic number.

22012212201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012212201220 is an abundant number, since it is smaller than the sum of its proper divisors (25872945659180).

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

22012212201220 is a wasteful number, since it uses less digits than its factorization.

22012212201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301619928 (or 301619926 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22012212201220 its reverse (2210221221022), we get a palindrome (24222433422242).

The spelling of 22012212201220 in words is "twenty-two trillion, twelve billion, two hundred twelve million, two hundred one thousand, two hundred twenty".