22220110021021 has 12 divisors (see below), whose sum is σ = 24437737927456. Its totient is φ = 20188537090920.

The previous prime is 22220110021019. The next prime is 22220110021051. The reversal of 22220110021021 is 12012001102222.

It is a happy number.

It is not a de Polignac number, because 22220110021021 - 2¹ = 22220110021019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22220110020986 and 22220110021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220110021051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52346505 + ... + 52769278.

Almost surely, 2^{22220110021021} is an apocalyptic number.

It is an amenable number.

22220110021021 is a deficient number, since it is larger than the sum of its proper divisors (2217627906435).

22220110021021 is a wasteful number, since it uses less digits than its factorization.

22220110021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105117552 (or 105117541 counting only the distinct ones).

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

Adding to 22220110021021 its reverse (12012001102222), we get a palindrome (34232111123243).

The spelling of 22220110021021 in words is "twenty-two trillion, two hundred twenty billion, one hundred ten million, twenty-one thousand, twenty-one".