221011098 has 96 divisors (see below), whose sum is σ = 560821632. Its totient is φ = 56833920.

The previous prime is 221011081. The next prime is 221011103. The reversal of 221011098 is 890110122.

221011098 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 797736 + ... + 798012.

It is an arithmetic number, because the mean of its divisors is an integer number (5841892).

Almost surely, 2^221011098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221011098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280410816).

221011098 is an abundant number, since it is smaller than the sum of its proper divisors (339810534).

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

221011098 is a wasteful number, since it uses less digits than its factorization.

221011098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 221011098 is about 14866.4420087659. The cubic root of 221011098 is about 604.6044797760.

The spelling of 221011098 in words is "two hundred twenty-one million, eleven thousand, ninety-eight".