221099046 has 32 divisors (see below), whose sum is σ = 527344128. Its totient is φ = 60424320.

The previous prime is 221099033. The next prime is 221099071. The reversal of 221099046 is 640990122.

221099046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221099046² = 97769576284220232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221098998 and 221099016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113475 + ... + 115406.

It is an arithmetic number, because the mean of its divisors is an integer number (16479504).

Almost surely, 2^221099046 is an apocalyptic number.

221099046 is an abundant number, since it is smaller than the sum of its proper divisors (306245082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221099046 is a wasteful number, since it uses less digits than its factorization.

221099046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228916.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 221099046 is about 14869.3996516336. The cubic root of 221099046 is about 604.6846668550.

The spelling of 221099046 in words is "two hundred twenty-one million, ninety-nine thousand, forty-six".