22110122221 has 4 divisors (see below), whose sum is σ = 24120133344. Its totient is φ = 20100111100.

The previous prime is 22110122207. The next prime is 22110122233. The reversal of 22110122221 is 12222101122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22110122221 - 2¹³ = 22110114029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110122195 and 22110122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110122291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005005545 + ... + 1005005566.

It is an arithmetic number, because the mean of its divisors is an integer number (6030033336).

Almost surely, 2^22110122221 is an apocalyptic number.

It is an amenable number.

22110122221 is a deficient number, since it is larger than the sum of its proper divisors (2010011123).

22110122221 is a wasteful number, since it uses less digits than its factorization.

22110122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010011122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22110122221 its reverse (12222101122), we get a palindrome (34332223343).

The spelling of 22110122221 in words is "twenty-two billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".