221152033 has 4 divisors (see below), whose sum is σ = 222616768. Its totient is φ = 219687300.

The previous prime is 221152027. The next prime is 221152037. The reversal of 221152033 is 330251122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221152033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221152033.

It is not an unprimeable number, because it can be changed into a prime (221152037) 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, 732141 + ... + 732442.

It is an arithmetic number, because the mean of its divisors is an integer number (55654192).

Almost surely, 2^221152033 is an apocalyptic number.

It is an amenable number.

221152033 is a deficient number, since it is larger than the sum of its proper divisors (1464735).

221152033 is a wasteful number, since it uses less digits than its factorization.

221152033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464734.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 221152033 is about 14871.1812913433. The cubic root of 221152033 is about 604.7329677830.

The spelling of 221152033 in words is "two hundred twenty-one million, one hundred fifty-two thousand, thirty-three".