42224454011261 has 2 divisors, whose sum is σ = 42224454011262. Its totient is φ = 42224454011260.

The previous prime is 42224454011251. The next prime is 42224454011387. The reversal of 42224454011261 is 16211045442224.

42224454011261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29900008248100 + 12324445763161 = 5468090^2 + 3510619^2 .

It is a cyclic number.

It is not a de Polignac number, because 42224454011261 - 2²² = 42224449816957 is a prime.

It is a super-2 number, since 2×42224454011261² (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 (42224454011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112227005630 + 21112227005631.

It is an arithmetic number, because the mean of its divisors is an integer number (21112227005631).

Almost surely, 2^{42224454011261} is an apocalyptic number.

It is an amenable number.

42224454011261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42224454011261 is an equidigital number, since it uses as much as digits as its factorization.

42224454011261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 38.

Adding to 42224454011261 its reverse (16211045442224), we get a palindrome (58435499453485).

The spelling of 42224454011261 in words is "forty-two trillion, two hundred twenty-four billion, four hundred fifty-four million, eleven thousand, two hundred sixty-one".