20021222101122 has 128 divisors (see below), whose sum is σ = 51664894848000. Its totient is φ = 5683137863040.

The previous prime is 20021222100961. The next prime is 20021222101171. The reversal of 20021222101122 is 22110122212002.

It is a happy number.

20021222101122 is a `hidden beast` number, since 200 + 21 + 222 + 101 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20021222101095 and 20021222101104.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 8961768 + ... + 10970675.

It is an arithmetic number, because the mean of its divisors is an integer number (403631991000).

Almost surely, 2^{20021222101122} is an apocalyptic number.

20021222101122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021222101122 is an abundant number, since it is smaller than the sum of its proper divisors (31643672746878).

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

20021222101122 is a wasteful number, since it uses less digits than its factorization.

20021222101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19932573 (or 19932567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20021222101122 its reverse (22110122212002), we get a palindrome (42131344313124).

The spelling of 20021222101122 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-two".