22121112120001 has 4 divisors (see below), whose sum is σ = 22635556587952. Its totient is φ = 21606667652052.

The previous prime is 22121112119989. The next prime is 22121112120007. The reversal of 22121112120001 is 10002121112122.

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 a cyclic number.

It is not a de Polignac number, because 22121112120001 - 2⁵ = 22121112119969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121112120007) 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, 257222233911 + ... + 257222233996.

It is an arithmetic number, because the mean of its divisors is an integer number (5658889146988).

Almost surely, 2^{22121112120001} is an apocalyptic number.

It is an amenable number.

22121112120001 is a deficient number, since it is larger than the sum of its proper divisors (514444467951).

22121112120001 is an equidigital number, since it uses as much as digits as its factorization.

22121112120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514444467950.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22121112120001 its reverse (10002121112122), we get a palindrome (32123233232123).

The spelling of 22121112120001 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty thousand, one".