221151202 has 8 divisors (see below), whose sum is σ = 331803612. Its totient is φ = 110550000.

The previous prime is 221151191. The next prime is 221151209. The reversal of 221151202 is 202151122.

It is a happy number.

221151202 is digitally balanced in base 3, 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 2 ways, for example, as 208484721 + 12666481 = 14439^2 + 3559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221151209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952 + ... + 21052.

Almost surely, 2^221151202 is an apocalyptic number.

221151202 is a deficient number, since it is larger than the sum of its proper divisors (110652410).

221151202 is a wasteful number, since it uses less digits than its factorization.

221151202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25604.

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

The square root of 221151202 is about 14871.1533513712. The cubic root of 221151202 is about 604.7322103346.

Subtracting from 221151202 its product of nonzero digits (80), we obtain a palindrome (221151122).

The spelling of 221151202 in words is "two hundred twenty-one million, one hundred fifty-one thousand, two hundred two".