22081098 has 32 divisors (see below), whose sum is σ = 47944512. Its totient is φ = 6739200.

The previous prime is 22081091. The next prime is 22081133. The reversal of 22081098 is 89018022.

It is not an unprimeable number, because it can be changed into a prime (22081091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9138 + ... + 11298.

It is an arithmetic number, because the mean of its divisors is an integer number (1498266).

Almost surely, 2^22081098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22081098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23972256).

22081098 is an abundant number, since it is smaller than the sum of its proper divisors (25863414).

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

22081098 is a wasteful number, since it uses less digits than its factorization.

22081098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 22081098 is about 4699.0528832947. The cubic root of 22081098 is about 280.5478135708.

It can be divided in two parts, 220 and 81098, that added together give a palindrome (81318).

The spelling of 22081098 in words is "twenty-two million, eighty-one thousand, ninety-eight".