22012101121 has 4 divisors (see below), whose sum is σ = 22106573892. Its totient is φ = 21917628352.

The previous prime is 22012101077. The next prime is 22012101157. The reversal of 22012101121 is 12110121022.

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 1603121521 + 20408979600 = 40039^2 + 142860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012101121 is a prime.

It is a super-2 number, since 2×22012101121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012101191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47236036 + ... + 47236501.

It is an arithmetic number, because the mean of its divisors is an integer number (5526643473).

Almost surely, 2^22012101121 is an apocalyptic number.

It is an amenable number.

22012101121 is a deficient number, since it is larger than the sum of its proper divisors (94472771).

22012101121 is an equidigital number, since it uses as much as digits as its factorization.

22012101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94472770.

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

Adding to 22012101121 its reverse (12110121022), we get a palindrome (34122222143).

The spelling of 22012101121 in words is "twenty-two billion, twelve million, one hundred one thousand, one hundred twenty-one".