2121200371 has 2 divisors, whose sum is σ = 2121200372. Its totient is φ = 2121200370.

The previous prime is 2121200321. The next prime is 2121200377. The reversal of 2121200371 is 1730021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121200371 - 2¹⁵ = 2121167603 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121200377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060600185 + 1060600186.

It is an arithmetic number, because the mean of its divisors is an integer number (1060600186).

Almost surely, 2^2121200371 is an apocalyptic number.

2121200371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121200371 is an equidigital number, since it uses as much as digits as its factorization.

2121200371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2121200371 is about 46056.4910843195. The cubic root of 2121200371 is about 1284.8740702344.

Adding to 2121200371 its reverse (1730021212), we get a palindrome (3851221583).

The spelling of 2121200371 in words is "two billion, one hundred twenty-one million, two hundred thousand, three hundred seventy-one".