221150139 has 32 divisors (see below), whose sum is σ = 357519360. Its totient is φ = 118778400.

The previous prime is 221150123. The next prime is 221150141. The reversal of 221150139 is 931051122.

It is not a de Polignac number, because 221150139 - 2⁴ = 221150123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221150119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50154 + ... + 54384.

It is an arithmetic number, because the mean of its divisors is an integer number (11172480).

Almost surely, 2^221150139 is an apocalyptic number.

221150139 is a deficient number, since it is larger than the sum of its proper divisors (136369221).

221150139 is a wasteful number, since it uses less digits than its factorization.

221150139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 221150139 is about 14871.1176109935. The cubic root of 221150139 is about 604.7312414178.

The spelling of 221150139 in words is "two hundred twenty-one million, one hundred fifty thousand, one hundred thirty-nine".