4221150 has 48 divisors (see below), whose sum is σ = 10606464. Its totient is φ = 1110880.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221150 is 511224.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15919 + ... + 16181.

It is an arithmetic number, because the mean of its divisors is an integer number (220968).

Almost surely, 2^4221150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5303232).

4221150 is an abundant number, since it is smaller than the sum of its proper divisors (6385314).

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

4221150 is a wasteful number, since it uses less digits than its factorization.

4221150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 4221150 is about 2054.5437449711. The cubic root of 4221150 is about 161.6132367927.

Adding to 4221150 its reverse (511224), we get a palindrome (4732374).

It can be divided in two parts, 4221 and 150, that added together give a triangular number (4371 = T₉₃).

The spelling of 4221150 in words is "four million, two hundred twenty-one thousand, one hundred fifty".