22020110001221 has 8 divisors (see below), whose sum is σ = 23361575470080. Its totient is φ = 20696895763488.

The previous prime is 22020110001173. The next prime is 22020110001269. The reversal of 22020110001221 is 12210001102022.

It is an interprime number because it is at equal distance from previous prime (22020110001173) and next prime (22020110001269).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22020110001221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020110001196 and 22020110001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020110001121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4562805296 + ... + 4562810121.

It is an arithmetic number, because the mean of its divisors is an integer number (2920196933760).

Almost surely, 2^{22020110001221} is an apocalyptic number.

It is an amenable number.

22020110001221 is a deficient number, since it is larger than the sum of its proper divisors (1341465468859).

22020110001221 is a wasteful number, since it uses less digits than its factorization.

22020110001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9125615563.

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

Adding to 22020110001221 its reverse (12210001102022), we get a palindrome (34230111103243).

The spelling of 22020110001221 in words is "twenty-two trillion, twenty billion, one hundred ten million, one thousand, two hundred twenty-one".