221152602 has 32 divisors (see below), whose sum is σ = 483042240. Its totient is φ = 66942720.

The previous prime is 221152553. The next prime is 221152619. The reversal of 221152602 is 206251122.

It is a happy number.

221152602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117138 + ... + 119010.

It is an arithmetic number, because the mean of its divisors is an integer number (15095070).

Almost surely, 2^221152602 is an apocalyptic number.

221152602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221152602 is an abundant number, since it is smaller than the sum of its proper divisors (261889638).

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

221152602 is a wasteful number, since it uses less digits than its factorization.

221152602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 221152602 is about 14871.2004222927. The cubic root of 221152602 is about 604.7334864198.

The spelling of 221152602 in words is "two hundred twenty-one million, one hundred fifty-two thousand, six hundred two".