15200120203 has 4 divisors (see below), whose sum is σ = 15200411400. Its totient is φ = 15199829008.

The previous prime is 15200120179. The next prime is 15200120209. The reversal of 15200120203 is 30202100251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15200120203 - 2²¹ = 15198023051 is a prime.

It is a super-2 number, since 2×15200120203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15200120209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43378 + ... + 179671.

It is an arithmetic number, because the mean of its divisors is an integer number (3800102850).

Almost surely, 2^15200120203 is an apocalyptic number.

15200120203 is a deficient number, since it is larger than the sum of its proper divisors (291197).

15200120203 is an equidigital number, since it uses as much as digits as its factorization.

15200120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291196.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 15200120203 its reverse (30202100251), we get a palindrome (45402220454).

The spelling of 15200120203 in words is "fifteen billion, two hundred million, one hundred twenty thousand, two hundred three".