21022156667341 has 2 divisors, whose sum is σ = 21022156667342. Its totient is φ = 21022156667340.

The previous prime is 21022156667327. The next prime is 21022156667399. The reversal of 21022156667341 is 14376665122012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19448188200100 + 1573968467241 = 4410010^2 + 1254579^2 .

It is a cyclic number.

It is not a de Polignac number, because 21022156667341 - 2²⁵ = 21022123112909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21022156667291 and 21022156667300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022156667641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511078333670 + 10511078333671.

It is an arithmetic number, because the mean of its divisors is an integer number (10511078333671).

Almost surely, 2^{21022156667341} is an apocalyptic number.

It is an amenable number.

21022156667341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022156667341 is an equidigital number, since it uses as much as digits as its factorization.

21022156667341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 21022156667341 in words is "twenty-one trillion, twenty-two billion, one hundred fifty-six million, six hundred sixty-seven thousand, three hundred forty-one".