22011001011121 has 4 divisors (see below), whose sum is σ = 22013135318052. Its totient is φ = 22008866704192.

The previous prime is 22011001011119. The next prime is 22011001011217. The reversal of 22011001011121 is 12111010011022.

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 15919661103025 + 6091339908096 = 3989945^2 + 2468064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011001011121 - 2¹ = 22011001011119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011001018121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067137996 + ... + 1067158621.

It is an arithmetic number, because the mean of its divisors is an integer number (5503283829513).

Almost surely, 2^{22011001011121} is an apocalyptic number.

It is an amenable number.

22011001011121 is a deficient number, since it is larger than the sum of its proper divisors (2134306931).

22011001011121 is a wasteful number, since it uses less digits than its factorization.

22011001011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134306930.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22011001011121 its reverse (12111010011022), we get a palindrome (34122011022143).

The spelling of 22011001011121 in words is "twenty-two trillion, eleven billion, one million, eleven thousand, one hundred twenty-one".