22220220021020 has 72 divisors (see below), whose sum is σ = 54584068447440. Its totient is φ = 7575800413440.

The previous prime is 22220220021017. The next prime is 22220220021023. The reversal of 22220220021020 is 2012002202222.

It is an interprime number because it is at equal distance from previous prime (22220220021017) and next prime (22220220021023).

It is a self number, because there is not a number n which added to its sum of digits gives 22220220021020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220220021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63158921 + ... + 63509760.

It is an arithmetic number, because the mean of its divisors is an integer number (758112061770).

Almost surely, 2^{22220220021020} is an apocalyptic number.

22220220021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220220021020 is an abundant number, since it is smaller than the sum of its proper divisors (32363848426420).

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

22220220021020 is a wasteful number, since it uses less digits than its factorization.

22220220021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126668883 (or 126668874 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22220220021020 its reverse (2012002202222), we get a palindrome (24232222223242).

The spelling of 22220220021020 in words is "twenty-two trillion, two hundred twenty billion, two hundred twenty million, twenty-one thousand, twenty".