22130722 has 4 divisors (see below), whose sum is σ = 33196086. Its totient is φ = 11065360.

The previous prime is 22130671. The next prime is 22130737. The reversal of 22130722 is 22703122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 312481 = 4671^2 + 559^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22130722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5532679 + ... + 5532682.

Almost surely, 2^22130722 is an apocalyptic number.

22130722 is a deficient number, since it is larger than the sum of its proper divisors (11065364).

22130722 is a wasteful number, since it uses less digits than its factorization.

22130722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11065363.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 22130722 is about 4704.3301329732. The cubic root of 22130722 is about 280.7578195611.

Adding to 22130722 its reverse (22703122), we get a palindrome (44833844).

The spelling of 22130722 in words is "twenty-two million, one hundred thirty thousand, seven hundred twenty-two".