221440029 has 8 divisors (see below), whose sum is σ = 296046432. Its totient is φ = 147230160.

The previous prime is 221440019. The next prime is 221440061. The reversal of 221440029 is 920044122.

221440029 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 not a de Polignac number, because 221440029 - 2⁴ = 221440013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221439990 and 221440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221440019) 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, 97827 + ... + 100064.

It is an arithmetic number, because the mean of its divisors is an integer number (37005804).

Almost surely, 2^221440029 is an apocalyptic number.

It is an amenable number.

221440029 is a deficient number, since it is larger than the sum of its proper divisors (74606403).

221440029 is a wasteful number, since it uses less digits than its factorization.

221440029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198267.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 221440029 is about 14880.8611645966. The cubic root of 221440029 is about 604.9953591156.

The spelling of 221440029 in words is "two hundred twenty-one million, four hundred forty thousand, twenty-nine".