22051142149 has 2 divisors, whose sum is σ = 22051142150. Its totient is φ = 22051142148.

The previous prime is 22051142143. The next prime is 22051142159. The reversal of 22051142149 is 94124115022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20644517124 + 1406625025 = 143682^2 + 37505^2 .

It is a cyclic number.

It is not a de Polignac number, because 22051142149 - 2¹¹ = 22051140101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22051142149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22051142143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11025571074 + 11025571075.

It is an arithmetic number, because the mean of its divisors is an integer number (11025571075).

Almost surely, 2^22051142149 is an apocalyptic number.

It is an amenable number.

22051142149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22051142149 is an equidigital number, since it uses as much as digits as its factorization.

22051142149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 22051142149 in words is "twenty-two billion, fifty-one million, one hundred forty-two thousand, one hundred forty-nine".