221150016 has 42 divisors (see below), whose sum is σ = 633888242. Its totient is φ = 73716480.

The previous prime is 221149967. The next prime is 221150021. The reversal of 221150016 is 610051122.

221150016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161798400 + 59351616 = 12720^2 + 7704^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191395 + ... + 192546.

Almost surely, 2^221150016 is an apocalyptic number.

It is an amenable number.

221150016 is an abundant number, since it is smaller than the sum of its proper divisors (412738226).

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

221150016 is a wasteful number, since it uses less digits than its factorization.

221150016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383959 (or 383946 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 221150016 is about 14871.1134754597. The cubic root of 221150016 is about 604.7311293040.

It can be divided in two parts, 22 and 1150016, that multiplied together give a palindrome (25300352).

The spelling of 221150016 in words is "two hundred twenty-one million, one hundred fifty thousand, sixteen".