22012021012220 has 12 divisors (see below), whose sum is σ = 46225244125704. Its totient is φ = 8804808404880.

The previous prime is 22012021012181. The next prime is 22012021012237. The reversal of 22012021012220 is 2221012021022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550300525286 + ... + 550300525325.

It is an arithmetic number, because the mean of its divisors is an integer number (3852103677142).

Almost surely, 2^{22012021012220} is an apocalyptic number.

22012021012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012021012220 is an abundant number, since it is smaller than the sum of its proper divisors (24213223113484).

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

22012021012220 is a wasteful number, since it uses less digits than its factorization.

22012021012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100601050620 (or 1100601050618 counting only the distinct ones).

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

Adding to 22012021012220 its reverse (2221012021022), we get a palindrome (24233033033242).

The spelling of 22012021012220 in words is "twenty-two trillion, twelve billion, twenty-one million, twelve thousand, two hundred twenty".