221153350 has 48 divisors (see below), whose sum is σ = 472380480. Its totient is φ = 76183200.

The previous prime is 221153297. The next prime is 221153353. The reversal of 221153350 is 53351122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221153353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132 + ... + 21031.

It is an arithmetic number, because the mean of its divisors is an integer number (9841260).

Almost surely, 2^221153350 is an apocalyptic number.

221153350 is an abundant number, since it is smaller than the sum of its proper divisors (251227130).

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

221153350 is a wasteful number, since it uses less digits than its factorization.

221153350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21205 (or 21200 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 221153350 is about 14871.2255715526. The cubic root of 221153350 is about 604.7341682117.

The spelling of 221153350 in words is "two hundred twenty-one million, one hundred fifty-three thousand, three hundred fifty".