15200221155 has 24 divisors (see below), whose sum is σ = 28291025232. Its totient is φ = 6948672192.

The previous prime is 15200221129. The next prime is 15200221171. The reversal of 15200221155 is 55112200251.

15200221155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15200221155 - 2¹² = 15200217059 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10339552 + ... + 10341021.

It is an arithmetic number, because the mean of its divisors is an integer number (1178792718).

Almost surely, 2^15200221155 is an apocalyptic number.

15200221155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15200221155 is a deficient number, since it is larger than the sum of its proper divisors (13090804077).

15200221155 is a wasteful number, since it uses less digits than its factorization.

15200221155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20680595 (or 20680588 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 15200221155 in words is "fifteen billion, two hundred million, two hundred twenty-one thousand, one hundred fifty-five".