22012120111001 has 4 divisors (see below), whose sum is σ = 22013884905012. Its totient is φ = 22010355316992.

The previous prime is 22012120110991. The next prime is 22012120111043. The reversal of 22012120111001 is 10011102121022.

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 12162314477401 + 9849805633600 = 3487451^2 + 3138440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012120111001 - 2¹⁰ = 22012120109977 is a prime.

It is a super-2 number, since 2×22012120111001² (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 (22012120111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882378296 + ... + 882403241.

It is an arithmetic number, because the mean of its divisors is an integer number (5503471226253).

Almost surely, 2^{22012120111001} is an apocalyptic number.

It is an amenable number.

22012120111001 is a deficient number, since it is larger than the sum of its proper divisors (1764794011).

22012120111001 is a wasteful number, since it uses less digits than its factorization.

22012120111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764794010.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22012120111001 its reverse (10011102121022), we get a palindrome (32023222232023).

The spelling of 22012120111001 in words is "twenty-two trillion, twelve billion, one hundred twenty million, one hundred eleven thousand, one".