20021222010180 has 48 divisors (see below), whose sum is σ = 56300020043904. Its totient is φ = 5316078401280.

The previous prime is 20021222010161. The next prime is 20021222010191. The reversal of 20021222010180 is 8101022212002.

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, 716052616 + ... + 716080575.

It is an arithmetic number, because the mean of its divisors is an integer number (1172917084248).

Almost surely, 2^{20021222010180} is an apocalyptic number.

20021222010180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021222010180 is an abundant number, since it is smaller than the sum of its proper divisors (36278798033724).

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

20021222010180 is a wasteful number, since it uses less digits than its factorization.

20021222010180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432133436 (or 1432133434 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20021222010180 its reverse (8101022212002), we get a palindrome (28122244222182).

The spelling of 20021222010180 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, ten thousand, one hundred eighty".