22124233242121 has 4 divisors (see below), whose sum is σ = 22127125684500. Its totient is φ = 22121340799744.

The previous prime is 22124233242109. The next prime is 22124233242131. The reversal of 22124233242121 is 12124233242122.

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 1236408339721 + 20887824902400 = 1111939^2 + 4570320^2 .

It is a cyclic number.

It is not a de Polignac number, because 22124233242121 - 2³⁹ = 21574477428233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22124233242131) 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, 1446209716 + ... + 1446225013.

It is an arithmetic number, because the mean of its divisors is an integer number (5531781421125).

Almost surely, 2^{22124233242121} is an apocalyptic number.

It is an amenable number.

22124233242121 is a deficient number, since it is larger than the sum of its proper divisors (2892442379).

22124233242121 is an equidigital number, since it uses as much as digits as its factorization.

22124233242121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892442378.

The product of its digits is 18432, while the sum is 31.

Adding to 22124233242121 its reverse (12124233242122), we get a palindrome (34248466484243).

Subtracting from 22124233242121 its reverse (12124233242122), we obtain a palindrome (9999999999999).

The spelling of 22124233242121 in words is "twenty-two trillion, one hundred twenty-four billion, two hundred thirty-three million, two hundred forty-two thousand, one hundred twenty-one".