22150161700 has 18 divisors (see below), whose sum is σ = 48065851106. Its totient is φ = 8860064640.

The previous prime is 22150161637. The next prime is 22150161701. The reversal of 22150161700 is 716105122.

It can be written as a sum of positive squares in 3 ways, for example, as 1231167744 + 20918993956 = 35088^2 + 144634^2 .

It is a super-2 number, since 2×22150161700² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (22150161701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110750709 + ... + 110750908.

Almost surely, 2^22150161700 is an apocalyptic number.

22150161700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22150161700 is an abundant number, since it is smaller than the sum of its proper divisors (25915689406).

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

22150161700 is a wasteful number, since it uses less digits than its factorization.

22150161700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221501631 (or 221501624 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

Adding to 22150161700 its reverse (716105122), we get a palindrome (22866266822).

The spelling of 22150161700 in words is "twenty-two billion, one hundred fifty million, one hundred sixty-one thousand, seven hundred".