221120152 has 32 divisors (see below), whose sum is σ = 454021200. Its totient is φ = 100124800.

The previous prime is 221120149. The next prime is 221120153. The reversal of 221120152 is 251021122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120153) 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, 19002 + ... + 28342.

Almost surely, 2^221120152 is an apocalyptic number.

221120152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221120152 is an abundant number, since it is smaller than the sum of its proper divisors (232901048).

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

221120152 is a wasteful number, since it uses less digits than its factorization.

221120152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9627 (or 9623 counting only the distinct ones).

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

The square root of 221120152 is about 14870.1093472778. The cubic root of 221120152 is about 604.7039072041.

Adding to 221120152 its reverse (251021122), we get a palindrome (472141274).

The spelling of 221120152 in words is "two hundred twenty-one million, one hundred twenty thousand, one hundred fifty-two".