2043492845221 has 2 divisors, whose sum is σ = 2043492845222. Its totient is φ = 2043492845220.

The previous prime is 2043492845117. The next prime is 2043492845243. The reversal of 2043492845221 is 1225482943402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1317017892996 + 726474952225 = 1147614^2 + 852335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043492845221 - 2³⁵ = 2009133106853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043492845281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021746422610 + 1021746422611.

It is an arithmetic number, because the mean of its divisors is an integer number (1021746422611).

Almost surely, 2^{2043492845221} is an apocalyptic number.

It is an amenable number.

2043492845221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043492845221 is an equidigital number, since it uses as much as digits as its factorization.

2043492845221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 2043492845221 in words is "two trillion, forty-three billion, four hundred ninety-two million, eight hundred forty-five thousand, two hundred twenty-one".