221150140 has 24 divisors (see below), whose sum is σ = 464792832. Its totient is φ = 88388160.

The previous prime is 221150123. The next prime is 221150141. The reversal of 221150140 is 41051122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221150141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25662 + ... + 33178.

It is an arithmetic number, because the mean of its divisors is an integer number (19366368).

Almost surely, 2^221150140 is an apocalyptic number.

221150140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221150140 is an abundant number, since it is smaller than the sum of its proper divisors (243642692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221150140 is a wasteful number, since it uses less digits than its factorization.

221150140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8997 (or 8995 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 221150140 is about 14871.1176446157. The cubic root of 221150140 is about 604.7312423293.

The spelling of 221150140 in words is "two hundred twenty-one million, one hundred fifty thousand, one hundred forty".