22011012210001 has 4 divisors (see below), whose sum is σ = 22011630654052. Its totient is φ = 22010393765952.

The previous prime is 22011012209999. The next prime is 22011012210043. The reversal of 22011012210001 is 10001221011022.

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 2315878283601 + 19695133926400 = 1521801^2 + 4437920^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011012210001 - 2¹ = 22011012209999 is a prime.

It is a super-2 number, since 2×22011012210001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011012210101) 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, 309168636 + ... + 309239821.

It is an arithmetic number, because the mean of its divisors is an integer number (5502907663513).

Almost surely, 2^{22011012210001} is an apocalyptic number.

It is an amenable number.

22011012210001 is a deficient number, since it is larger than the sum of its proper divisors (618444051).

22011012210001 is an equidigital number, since it uses as much as digits as its factorization.

22011012210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618444050.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22011012210001 its reverse (10001221011022), we get a palindrome (32012233221023).

The spelling of 22011012210001 in words is "twenty-two trillion, eleven billion, twelve million, two hundred ten thousand, one".