22031077 has 2 divisors, whose sum is σ = 22031078. Its totient is φ = 22031076.

The previous prime is 22031069. The next prime is 22031123. The reversal of 22031077 is 77013022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12489156 + 9541921 = 3534^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031077 - 2³ = 22031069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031017) 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 as a sum of consecutive naturals, namely, 11015538 + 11015539.

It is an arithmetic number, because the mean of its divisors is an integer number (11015539).

Almost surely, 2^22031077 is an apocalyptic number.

It is an amenable number.

22031077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031077 is an equidigital number, since it uses as much as digits as its factorization.

22031077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 22031077 is about 4693.7274100655. The cubic root of 22031077 is about 280.3358088324.

Adding to 22031077 its reverse (77013022), we get a palindrome (99044099).

The spelling of 22031077 in words is "twenty-two million, thirty-one thousand, seventy-seven".