22120212221020 has 48 divisors (see below), whose sum is σ = 46603017665568. Its totient is φ = 8819407134720.

The previous prime is 22120212220973. The next prime is 22120212221027. The reversal of 22120212221020 is 2012221202122.

It is a super-2 number, since 2×22120212221020² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120212221027) 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 15 ways as a sum of consecutive naturals, for example, 159792435 + ... + 159930805.

It is an arithmetic number, because the mean of its divisors is an integer number (970896201366).

Almost surely, 2^{22120212221020} is an apocalyptic number.

22120212221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120212221020 is an abundant number, since it is smaller than the sum of its proper divisors (24482805444548).

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

22120212221020 is a wasteful number, since it uses less digits than its factorization.

22120212221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164230 (or 164228 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22120212221020 its reverse (2012221202122), we get a palindrome (24132433423142).

The spelling of 22120212221020 in words is "twenty-two trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, twenty".