22003065606221 has 12 divisors (see below), whose sum is σ = 25601768509500. Its totient is φ = 18855080032320.

The previous prime is 22003065606167. The next prime is 22003065606239. The reversal of 22003065606221 is 12260656030022.

It can be written as a sum of positive squares in 2 ways, for example, as 7350936210121 + 14652129396100 = 2711261^2 + 3827810^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22003065606221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003065606251) 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, 55640096 + ... + 56034153.

It is an arithmetic number, because the mean of its divisors is an integer number (2133480709125).

Almost surely, 2^{22003065606221} is an apocalyptic number.

It is an amenable number.

22003065606221 is a deficient number, since it is larger than the sum of its proper divisors (3598702903279).

22003065606221 is a wasteful number, since it uses less digits than its factorization.

22003065606221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111678284 (or 111678277 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 22003065606221 in words is "twenty-two trillion, three billion, sixty-five million, six hundred six thousand, two hundred twenty-one".