2105234121149 has 2 divisors, whose sum is σ = 2105234121150. Its totient is φ = 2105234121148.

The previous prime is 2105234121103. The next prime is 2105234121173. The reversal of 2105234121149 is 9411214325012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291648161049 + 813585960100 = 1136507^2 + 901990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105234121149 - 2¹² = 2105234117053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105234121049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052617060574 + 1052617060575.

It is an arithmetic number, because the mean of its divisors is an integer number (1052617060575).

Almost surely, 2^{2105234121149} is an apocalyptic number.

It is an amenable number.

2105234121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105234121149 is an equidigital number, since it uses as much as digits as its factorization.

2105234121149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 2105234121149 in words is "two trillion, one hundred five billion, two hundred thirty-four million, one hundred twenty-one thousand, one hundred forty-nine".