22121041444121 has 4 divisors (see below), whose sum is σ = 22127804223744. Its totient is φ = 22114278664500.

The previous prime is 22121041444111. The next prime is 22121041444127. The reversal of 22121041444121 is 12144414012122.

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 a de Polignac number, because none of the positive numbers 2^k-22121041444121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121041444127) 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, 3381384905 + ... + 3381391446.

It is an arithmetic number, because the mean of its divisors is an integer number (5531951055936).

Almost surely, 2^{22121041444121} is an apocalyptic number.

It is an amenable number.

22121041444121 is a deficient number, since it is larger than the sum of its proper divisors (6762779623).

22121041444121 is an equidigital number, since it uses as much as digits as its factorization.

22121041444121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762779622.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 22121041444121 its reverse (12144414012122), we get a palindrome (34265455456243).

The spelling of 22121041444121 in words is "twenty-two trillion, one hundred twenty-one billion, forty-one million, four hundred forty-four thousand, one hundred twenty-one".