22122020101221 has 16 divisors (see below), whose sum is σ = 32773472856000. Its totient is φ = 14747964016464.

The previous prime is 22122020101217. The next prime is 22122020101301. The reversal of 22122020101221 is 12210102022122.

It is a happy number.

22122020101221 is a `hidden beast` number, since 2 + 21 + 220 + 201 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 22122020101221 - 2² = 22122020101217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122020101194 and 22122020101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122020109221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8006455 + ... + 10409003.

It is an arithmetic number, because the mean of its divisors is an integer number (2048342053500).

Almost surely, 2^{22122020101221} is an apocalyptic number.

It is an amenable number.

22122020101221 is a deficient number, since it is larger than the sum of its proper divisors (10651452754779).

22122020101221 is a wasteful number, since it uses less digits than its factorization.

22122020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743585 (or 2743579 counting only the distinct ones).

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

Adding to 22122020101221 its reverse (12210102022122), we get a palindrome (34332122123343).

The spelling of 22122020101221 in words is "twenty-two trillion, one hundred twenty-two billion, twenty million, one hundred one thousand, two hundred twenty-one".