22472411427421 has 2 divisors, whose sum is σ = 22472411427422. Its totient is φ = 22472411427420.

The previous prime is 22472411427379. The next prime is 22472411427443. The reversal of 22472411427421 is 12472411427422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22463912431321 + 8498996100 = 4739611^2 + 92190^2 .

It is a cyclic number.

It is not a de Polignac number, because 22472411427421 - 2¹⁹ = 22472410903133 is a prime.

It is a super-2 number, since 2×22472411427421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22472411427721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11236205713710 + 11236205713711.

It is an arithmetic number, because the mean of its divisors is an integer number (11236205713711).

Almost surely, 2^{22472411427421} is an apocalyptic number.

It is an amenable number.

22472411427421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22472411427421 is an equidigital number, since it uses as much as digits as its factorization.

22472411427421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 401408, while the sum is 43.

Subtracting from 22472411427421 its reverse (12472411427422), we obtain a palindrome (9999999999999).

The spelling of 22472411427421 in words is "twenty-two trillion, four hundred seventy-two billion, four hundred eleven million, four hundred twenty-seven thousand, four hundred twenty-one".