2110451921 has 2 divisors, whose sum is σ = 2110451922. Its totient is φ = 2110451920.

The previous prime is 2110451897. The next prime is 2110451929. The reversal of 2110451921 is 1291540112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1711890625 + 398561296 = 41375^2 + 19964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110451921 - 2³⁰ = 1036710097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2110451929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055225960 + 1055225961.

It is an arithmetic number, because the mean of its divisors is an integer number (1055225961).

Almost surely, 2^2110451921 is an apocalyptic number.

It is an amenable number.

2110451921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110451921 is an equidigital number, since it uses as much as digits as its factorization.

2110451921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2110451921 is about 45939.6552120279. The cubic root of 2110451921 is about 1282.7001757950.

The spelling of 2110451921 in words is "two billion, one hundred ten million, four hundred fifty-one thousand, nine hundred twenty-one".