22011202122001 has 4 divisors (see below), whose sum is σ = 22011221244132. Its totient is φ = 22011182999872.

The previous prime is 22011202121983. The next prime is 22011202122017. The reversal of 22011202122001 is 10022120211022.

It is a happy number.

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 9556902347776 + 12454299774225 = 3091424^2 + 3529065^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011202122001 - 2⁷ = 22011202121873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011202122031) 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, 7715716 + ... + 10176181.

It is an arithmetic number, because the mean of its divisors is an integer number (5502805311033).

Almost surely, 2^{22011202122001} is an apocalyptic number.

It is an amenable number.

22011202122001 is a deficient number, since it is larger than the sum of its proper divisors (19122131).

22011202122001 is a wasteful number, since it uses less digits than its factorization.

22011202122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122130.

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

Adding to 22011202122001 its reverse (10022120211022), we get a palindrome (32033322333023).

The spelling of 22011202122001 in words is "twenty-two trillion, eleven billion, two hundred two million, one hundred twenty-two thousand, one".