221453130 has 32 divisors (see below), whose sum is σ = 537897024. Its totient is φ = 58342016.

The previous prime is 221453129. The next prime is 221453149. The reversal of 221453130 is 31354122.

221453130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221453097 and 221453106.

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, 41979 + ... + 46958.

It is an arithmetic number, because the mean of its divisors is an integer number (16809282).

Almost surely, 2^221453130 is an apocalyptic number.

221453130 is an abundant number, since it is smaller than the sum of its proper divisors (316443894).

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

221453130 is a wasteful number, since it uses less digits than its factorization.

221453130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89030.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 221453130 is about 14881.3013543843. The cubic root of 221453130 is about 605.0072899424.

The spelling of 221453130 in words is "two hundred twenty-one million, four hundred fifty-three thousand, one hundred thirty".