22110001202021 has 4 divisors (see below), whose sum is σ = 22118260450572. Its totient is φ = 22101741953472.

The previous prime is 22110001201973. The next prime is 22110001202087. The reversal of 22110001202021 is 12020210001122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 545921488225 + 21564079713796 = 738865^2 + 4643714^2 .

It is a cyclic number.

It is not a de Polignac number, because 22110001202021 - 2¹⁴ = 22110001185637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110001201987 and 22110001202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110001201021) 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, 4129620260 + ... + 4129625613.

It is an arithmetic number, because the mean of its divisors is an integer number (5529565112643).

Almost surely, 2^{22110001202021} is an apocalyptic number.

It is an amenable number.

22110001202021 is a deficient number, since it is larger than the sum of its proper divisors (8259248551).

22110001202021 is an equidigital number, since it uses as much as digits as its factorization.

22110001202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8259248550.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22110001202021 its reverse (12020210001122), we get a palindrome (34130211203143).

The spelling of 22110001202021 in words is "twenty-two trillion, one hundred ten billion, one million, two hundred two thousand, twenty-one".