22022011012221 has 24 divisors (see below), whose sum is σ = 34703508962304. Its totient is φ = 13345843234560.

The previous prime is 22022011012219. The next prime is 22022011012247. The reversal of 22022011012221 is 12221011022022.

It is a happy number.

22022011012221 is a `hidden beast` number, since 220 + 2 + 201 + 10 + 12 + 221 = 666.

It is not a de Polignac number, because 22022011012221 - 2¹ = 22022011012219 is a prime.

It is a super-2 number, since 2×22022011012221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22022011012194 and 22022011012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022011812221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5315901 + ... + 8503106.

It is an arithmetic number, because the mean of its divisors is an integer number (1445979540096).

Almost surely, 2^{22022011012221} is an apocalyptic number.

It is an amenable number.

22022011012221 is a deficient number, since it is larger than the sum of its proper divisors (12681497950083).

22022011012221 is a wasteful number, since it uses less digits than its factorization.

22022011012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835121 (or 13835118 counting only the distinct ones).

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

Adding to 22022011012221 its reverse (12221011022022), we get a palindrome (34243022034243).

The spelling of 22022011012221 in words is "twenty-two trillion, twenty-two billion, eleven million, twelve thousand, two hundred twenty-one".