22021003331220 has 96 divisors (see below), whose sum is σ = 63095630653440. Its totient is φ = 5735439964800.

The previous prime is 22021003331209. The next prime is 22021003331221. The reversal of 22021003331220 is 2213330012022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021003331221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59565945 + ... + 59934495.

It is an arithmetic number, because the mean of its divisors is an integer number (657246152640).

Almost surely, 2^{22021003331220} is an apocalyptic number.

22021003331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021003331220 is an abundant number, since it is smaller than the sum of its proper divisors (41074627322220).

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

22021003331220 is a wasteful number, since it uses less digits than its factorization.

22021003331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391765 (or 391763 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22021003331220 its reverse (2213330012022), we get a palindrome (24234333343242).

The spelling of 22021003331220 in words is "twenty-two trillion, twenty-one billion, three million, three hundred thirty-one thousand, two hundred twenty".