22521351343109 has 2 divisors, whose sum is σ = 22521351343110. Its totient is φ = 22521351343108.

The previous prime is 22521351343093. The next prime is 22521351343129. The reversal of 22521351343109 is 90134315312522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15499354834084 + 7021996509025 = 3936922^2 + 2649905^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521351343109 - 2⁴ = 22521351343093 is a prime.

It is a super-2 number, since 2×22521351343109² (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 (22521351343129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260675671554 + 11260675671555.

It is an arithmetic number, because the mean of its divisors is an integer number (11260675671555).

Almost surely, 2^{22521351343109} is an apocalyptic number.

It is an amenable number.

22521351343109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521351343109 is an equidigital number, since it uses as much as digits as its factorization.

22521351343109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 22521351343109 in words is "twenty-two trillion, five hundred twenty-one billion, three hundred fifty-one million, three hundred forty-three thousand, one hundred nine".