22212212011220 has 96 divisors (see below), whose sum is σ = 58699120435200. Its totient is φ = 6858583194240.

The previous prime is 22212212011219. The next prime is 22212212011243. The reversal of 22212212011220 is 2211021221222.

22212212011220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22212212011192 and 22212212011201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67234820 + ... + 67564379.

It is an arithmetic number, because the mean of its divisors is an integer number (611449171200).

Almost surely, 2^{22212212011220} is an apocalyptic number.

22212212011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212212011220 is an abundant number, since it is smaller than the sum of its proper divisors (36486908423980).

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

22212212011220 is a wasteful number, since it uses less digits than its factorization.

22212212011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134799333 (or 134799331 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22212212011220 its reverse (2211021221222), we get a palindrome (24423233232442).

The spelling of 22212212011220 in words is "twenty-two trillion, two hundred twelve billion, two hundred twelve million, eleven thousand, two hundred twenty".