72101200103 has 2 divisors, whose sum is σ = 72101200104. Its totient is φ = 72101200102.

The previous prime is 72101200097. The next prime is 72101200111. The reversal of 72101200103 is 30100210127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72101200103 - 2²⁰ = 72100151527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72101200123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36050600051 + 36050600052.

It is an arithmetic number, because the mean of its divisors is an integer number (36050600052).

Almost surely, 2^72101200103 is an apocalyptic number.

72101200103 is a deficient number, since it is larger than the sum of its proper divisors (1).

72101200103 is an equidigital number, since it uses as much as digits as its factorization.

72101200103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The spelling of 72101200103 in words is "seventy-two billion, one hundred one million, two hundred thousand, one hundred three".