22001201121 has 4 divisors (see below), whose sum is σ = 29334934832. Its totient is φ = 14667467412.

The previous prime is 22001201119. The next prime is 22001201137. The reversal of 22001201121 is 12110210022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22001201121 - 2¹ = 22001201119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001201097 and 22001201106.

It is not an unprimeable number, because it can be changed into a prime (22001201171) 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, 3666866851 + ... + 3666866856.

It is an arithmetic number, because the mean of its divisors is an integer number (7333733708).

Almost surely, 2^22001201121 is an apocalyptic number.

It is an amenable number.

22001201121 is a deficient number, since it is larger than the sum of its proper divisors (7333733711).

22001201121 is an equidigital number, since it uses as much as digits as its factorization.

22001201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333733710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22001201121 its reverse (12110210022), we get a palindrome (34111411143).

The spelling of 22001201121 in words is "twenty-two billion, one million, two hundred one thousand, one hundred twenty-one".