221926 has 8 divisors (see below), whose sum is σ = 342000. Its totient is φ = 107928.

The previous prime is 221909. The next prime is 221941. The reversal of 221926 is 629122.

It is a happy number.

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

It is a super-2 number, since 2×221926² = 98502298952, which contains 22 as substring.

It is a cake number, because a cake can be divided into 221926 parts by 110 planar cuts.

It is a junction number, because it is equal to n+sod(n) for n = 221897 and 221906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426 + ... + 1573.

It is an arithmetic number, because the mean of its divisors is an integer number (42750).

2²²¹⁹²⁶ is an apocalyptic number.

221926 is a deficient number, since it is larger than the sum of its proper divisors (120074).

221926 is a wasteful number, since it uses less digits than its factorization.

221926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038.

The product of its digits is 432, while the sum is 22.

The square root of 221926 is about 471.0902249039. The cubic root of 221926 is about 60.5437608853.

The spelling of 221926 in words is "two hundred twenty-one thousand, nine hundred twenty-six".