221151103 has 4 divisors (see below), whose sum is σ = 221180848. Its totient is φ = 221121360.

The previous prime is 221151067. The next prime is 221151137. The reversal of 221151103 is 301151122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 301151122 = 2 ⋅150575561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221151103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221151503) 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, 7198 + ... + 22228.

It is an arithmetic number, because the mean of its divisors is an integer number (55295212).

Almost surely, 2^221151103 is an apocalyptic number.

221151103 is a deficient number, since it is larger than the sum of its proper divisors (29745).

221151103 is a wasteful number, since it uses less digits than its factorization.

221151103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29744.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 221151103 is about 14871.1500227790. The cubic root of 221151103 is about 604.7321200970.

The spelling of 221151103 in words is "two hundred twenty-one million, one hundred fifty-one thousand, one hundred three".