22021852020520 has 64 divisors (see below), whose sum is σ = 54054148219200. Its totient is φ = 8007870420480.

The previous prime is 22021852020463. The next prime is 22021852020569. The reversal of 22021852020520 is 2502025812022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69902716 + ... + 70217044.

It is an arithmetic number, because the mean of its divisors is an integer number (844596065925).

Almost surely, 2^{22021852020520} is an apocalyptic number.

22021852020520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021852020520 is an abundant number, since it is smaller than the sum of its proper divisors (32032296198680).

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

22021852020520 is a wasteful number, since it uses less digits than its factorization.

22021852020520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473578 (or 473574 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 22021852020520 its reverse (2502025812022), we get a palindrome (24523877832542).

The spelling of 22021852020520 in words is "twenty-two trillion, twenty-one billion, eight hundred fifty-two million, twenty thousand, five hundred twenty".