2121001110149 has 2 divisors, whose sum is σ = 2121001110150. Its totient is φ = 2121001110148.

The previous prime is 2121001110103. The next prime is 2121001110187. The reversal of 2121001110149 is 9410111001212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1726845669025 + 394155441124 = 1314095^2 + 627818^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121001110149 - 2²⁰ = 2121000061573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121001110199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060500555074 + 1060500555075.

It is an arithmetic number, because the mean of its divisors is an integer number (1060500555075).

Almost surely, 2^{2121001110149} is an apocalyptic number.

It is an amenable number.

2121001110149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121001110149 is an equidigital number, since it uses as much as digits as its factorization.

2121001110149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 2121001110149 in words is "two trillion, one hundred twenty-one billion, one million, one hundred ten thousand, one hundred forty-nine".