22124204142121 has 2 divisors, whose sum is σ = 22124204142122. Its totient is φ = 22124204142120.

The previous prime is 22124204142013. The next prime is 22124204142143. The reversal of 22124204142121 is 12124140242122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14527234954521 + 7596969187600 = 3811461^2 + 2756260^2 .

It is a cyclic number.

It is not a de Polignac number, because 22124204142121 - 2²¹ = 22124202044969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22124204142121.

It is not a weakly prime, because it can be changed into another prime (22124204142151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062102071060 + 11062102071061.

It is an arithmetic number, because the mean of its divisors is an integer number (11062102071061).

Almost surely, 2^{22124204142121} is an apocalyptic number.

It is an amenable number.

22124204142121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22124204142121 is an equidigital number, since it uses as much as digits as its factorization.

22124204142121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 22124204142121 its reverse (12124140242122), we get a palindrome (34248344384243).

The spelling of 22124204142121 in words is "twenty-two trillion, one hundred twenty-four billion, two hundred four million, one hundred forty-two thousand, one hundred twenty-one".