221000150 has 24 divisors (see below), whose sum is σ = 469783920. Its totient is φ = 75771360.

The previous prime is 221000141. The next prime is 221000243. The reversal of 221000150 is 51000122.

221000150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315365 + ... + 316064.

It is an arithmetic number, because the mean of its divisors is an integer number (19574330).

Almost surely, 2^221000150 is an apocalyptic number.

221000150 is an abundant number, since it is smaller than the sum of its proper divisors (248783770).

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

221000150 is a wasteful number, since it uses less digits than its factorization.

221000150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631448 (or 631443 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 221000150 is about 14866.0737923636. The cubic root of 221000150 is about 604.5944963873.

Adding to 221000150 its reverse (51000122), we get a palindrome (272000272).

The spelling of 221000150 in words is "two hundred twenty-one million, one hundred fifty", and thus it is an aban number.