221026069 has 8 divisors (see below), whose sum is σ = 253810080. Its totient is φ = 190357200.

The previous prime is 221026037. The next prime is 221026097. The reversal of 221026069 is 960620122.

221026069 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 221026069 - 2⁵ = 221026037 is a prime.

It is a super-2 number, since 2×221026069² = 97705046355185522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221026009) 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, 528562 + ... + 528979.

It is an arithmetic number, because the mean of its divisors is an integer number (31726260).

Almost surely, 2^221026069 is an apocalyptic number.

It is an amenable number.

221026069 is a deficient number, since it is larger than the sum of its proper divisors (32784011).

221026069 is a wasteful number, since it uses less digits than its factorization.

221026069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057571.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 221026069 is about 14866.9455168168. The cubic root of 221026069 is about 604.6181311709.

The spelling of 221026069 in words is "two hundred twenty-one million, twenty-six thousand, sixty-nine".