21022120211149 has 2 divisors, whose sum is σ = 21022120211150. Its totient is φ = 21022120211148.

The previous prime is 21022120211101. The next prime is 21022120211153. The reversal of 21022120211149 is 94111202122012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13407241328100 + 7614878883049 = 3661590^2 + 2759507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022120211149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022120211189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511060105574 + 10511060105575.

It is an arithmetic number, because the mean of its divisors is an integer number (10511060105575).

Almost surely, 2^{21022120211149} is an apocalyptic number.

It is an amenable number.

21022120211149 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022120211149 is an equidigital number, since it uses as much as digits as its factorization.

21022120211149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 21022120211149 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, two hundred eleven thousand, one hundred forty-nine".