22213030340 has 72 divisors (see below), whose sum is σ = 50161469400. Its totient is φ = 8258605056.

The previous prime is 22213030339. The next prime is 22213030373. The reversal of 22213030340 is 4303031222.

It can be written as a sum of positive squares in 4 ways, for example, as 6181418884 + 16031611456 = 78622^2 + 126616^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353636 + ... + 411684.

It is an arithmetic number, because the mean of its divisors is an integer number (696687075).

Almost surely, 2^22213030340 is an apocalyptic number.

22213030340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22213030340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25080734700).

22213030340 is an abundant number, since it is smaller than the sum of its proper divisors (27948439060).

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

22213030340 is a wasteful number, since it uses less digits than its factorization.

22213030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58149 (or 58128 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 22213030340 its reverse (4303031222), we get a palindrome (26516061562).

The spelling of 22213030340 in words is "twenty-two billion, two hundred thirteen million, thirty thousand, three hundred forty".