22210001221220 has 24 divisors (see below), whose sum is σ = 46675121863104. Its totient is φ = 8877501574496.

The previous prime is 22210001221211. The next prime is 22210001221273. The reversal of 22210001221220 is 2212210001222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406154102 + ... + 406208781.

It is an arithmetic number, because the mean of its divisors is an integer number (1944796744296).

Almost surely, 2^{22210001221220} is an apocalyptic number.

22210001221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22210001221220 is an abundant number, since it is smaller than the sum of its proper divisors (24465120641884).

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

22210001221220 is a wasteful number, since it uses less digits than its factorization.

22210001221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812364259 (or 812364257 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22210001221220 its reverse (2212210001222), we get a palindrome (24422211222442).

The spelling of 22210001221220 in words is "twenty-two trillion, two hundred ten billion, one million, two hundred twenty-one thousand, two hundred twenty".