221150501 has 16 divisors (see below), whose sum is σ = 275099328. Its totient is φ = 174662400.

The previous prime is 221150477. The next prime is 221150533. The reversal of 221150501 is 105051122.

It is not a de Polignac number, because 221150501 - 2¹⁰ = 221149477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221150501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221150801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43055 + ... + 47916.

It is an arithmetic number, because the mean of its divisors is an integer number (17193708).

Almost surely, 2^221150501 is an apocalyptic number.

It is an amenable number.

221150501 is a deficient number, since it is larger than the sum of its proper divisors (53948827).

221150501 is a wasteful number, since it uses less digits than its factorization.

221150501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91012.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 221150501 is about 14871.1297822324. The cubic root of 221150501 is about 604.7315713785.

The spelling of 221150501 in words is "two hundred twenty-one million, one hundred fifty thousand, five hundred one".