22113321210 has 96 divisors (see below), whose sum is σ = 59119671312. Its totient is φ = 5730600960.

The previous prime is 22113321179. The next prime is 22113321221. The reversal of 22113321210 is 1212331122.

22113321210 is a `hidden beast` number, since 2 + 211 + 332 + 121 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 21346086609 + 767234601 = 146103^2 + 27699^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 3130002 + ... + 3137058.

Almost surely, 2^22113321210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22113321210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29559835656).

22113321210 is an abundant number, since it is smaller than the sum of its proper divisors (37006350102).

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

22113321210 is a wasteful number, since it uses less digits than its factorization.

22113321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048 (or 8045 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22113321210 its reverse (1212331122), we get a palindrome (23325652332).

The spelling of 22113321210 in words is "twenty-two billion, one hundred thirteen million, three hundred twenty-one thousand, two hundred ten".