2101543210 has 16 divisors (see below), whose sum is σ = 4073760936. Its totient is φ = 775954368.

The previous prime is 2101543201. The next prime is 2101543219. The reversal of 2101543210 is 123451012.

It is an interprime number because it is at equal distance from previous prime (2101543201) and next prime (2101543219).

It can be written as a sum of positive squares in 4 ways, for example, as 1864598761 + 236944449 = 43181^2 + 15393^2 .

It is not an unprimeable number, because it can be changed into a prime (2101543219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8082729 + ... + 8082988.

Almost surely, 2^2101543210 is an apocalyptic number.

2101543210 is a deficient number, since it is larger than the sum of its proper divisors (1972217726).

2101543210 is a wasteful number, since it uses less digits than its factorization.

2101543210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16165737.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2101543210 is about 45842.5916588493. The cubic root of 2101543210 is about 1280.8927711291.

Adding to 2101543210 its reverse (123451012), we get a palindrome (2224994222).

The spelling of 2101543210 in words is "two billion, one hundred one million, five hundred forty-three thousand, two hundred ten".