2181012203 has 2 divisors, whose sum is σ = 2181012204. Its totient is φ = 2181012202.

The previous prime is 2181012181. The next prime is 2181012221. The reversal of 2181012203 is 3022101812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2181012203 - 2²² = 2176817899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2181012233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090506101 + 1090506102.

It is an arithmetic number, because the mean of its divisors is an integer number (1090506102).

Almost surely, 2^2181012203 is an apocalyptic number.

2181012203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181012203 is an equidigital number, since it uses as much as digits as its factorization.

2181012203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2181012203 is about 46701.3083649698. The cubic root of 2181012203 is about 1296.8389080529.

The spelling of 2181012203 in words is "two billion, one hundred eighty-one million, twelve thousand, two hundred three".