22221210222220 has 24 divisors (see below), whose sum is σ = 46789647491664. Its totient is φ = 8864654369856.

The previous prime is 22221210222181. The next prime is 22221210222307. The reversal of 22221210222220 is 2222201212222.

It is a junction number, because it is equal to n+sod(n) for n = 22221210222191 and 22221210222200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489349794 + ... + 1489364713.

It is an arithmetic number, because the mean of its divisors is an integer number (1949568645486).

Almost surely, 2^{22221210222220} is an apocalyptic number.

22221210222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221210222220 is an abundant number, since it is smaller than the sum of its proper divisors (24568437269444).

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

22221210222220 is a wasteful number, since it uses less digits than its factorization.

22221210222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978714889 (or 2978714887 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22221210222220 its reverse (2222201212222), we get a palindrome (24443411434442).

The spelling of 22221210222220 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty".