221253051 has 8 divisors (see below), whose sum is σ = 295225344. Its totient is φ = 147391400.

The previous prime is 221253047. The next prime is 221253059. The reversal of 221253051 is 150352122.

221253051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221253051 - 2² = 221253047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221253059) 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, 22875 + ... + 31076.

It is an arithmetic number, because the mean of its divisors is an integer number (36903168).

Almost surely, 2^221253051 is an apocalyptic number.

221253051 is a deficient number, since it is larger than the sum of its proper divisors (73972293).

221253051 is a wasteful number, since it uses less digits than its factorization.

221253051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55321.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 221253051 is about 14874.5773385330. The cubic root of 221253051 is about 604.8250305675.

The spelling of 221253051 in words is "two hundred twenty-one million, two hundred fifty-three thousand, fifty-one".