2112592361821 has 2 divisors, whose sum is σ = 2112592361822. Its totient is φ = 2112592361820.

The previous prime is 2112592361813. The next prime is 2112592361903. The reversal of 2112592361821 is 1281632952112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2109480284025 + 3112077796 = 1452405^2 + 55786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112592361821 - 2³ = 2112592361813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112592301821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056296180910 + 1056296180911.

It is an arithmetic number, because the mean of its divisors is an integer number (1056296180911).

Almost surely, 2^{2112592361821} is an apocalyptic number.

It is an amenable number.

2112592361821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112592361821 is an equidigital number, since it uses as much as digits as its factorization.

2112592361821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 43.

The spelling of 2112592361821 in words is "two trillion, one hundred twelve billion, five hundred ninety-two million, three hundred sixty-one thousand, eight hundred twenty-one".