221252633 has 8 divisors (see below), whose sum is σ = 254558400. Its totient is φ = 188371440.

The previous prime is 221252623. The next prime is 221252651. The reversal of 221252633 is 336252122.

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 221252633 - 2¹⁶ = 221187097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221252623) 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, 105023 + ... + 107108.

It is an arithmetic number, because the mean of its divisors is an integer number (31819800).

Almost surely, 2^221252633 is an apocalyptic number.

It is an amenable number.

221252633 is a deficient number, since it is larger than the sum of its proper divisors (33305767).

221252633 is a wasteful number, since it uses less digits than its factorization.

221252633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212287.

The product of its digits is 4320, while the sum is 26.

The square root of 221252633 is about 14874.5632877070. The cubic root of 221252633 is about 604.8246496808.

It can be divided in two parts, 2212 and 52633, that added together give a palindrome (54845).

The spelling of 221252633 in words is "two hundred twenty-one million, two hundred fifty-two thousand, six hundred thirty-three".