20022113 has 2 divisors, whose sum is σ = 20022114. Its totient is φ = 20022112.

The previous prime is 20022109. The next prime is 20022127. The reversal of 20022113 is 31122002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18258529 + 1763584 = 4273^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022113 - 2² = 20022109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20022094 and 20022103.

It is not a weakly prime, because it can be changed into another prime (20022103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011056 + 10011057.

It is an arithmetic number, because the mean of its divisors is an integer number (10011057).

Almost surely, 2^20022113 is an apocalyptic number.

It is an amenable number.

20022113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022113 is an equidigital number, since it uses as much as digits as its factorization.

20022113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20022113 is about 4474.6075805594. The cubic root of 20022113 is about 271.5417646737.

Adding to 20022113 its reverse (31122002), we get a palindrome (51144115).

The spelling of 20022113 in words is "twenty million, twenty-two thousand, one hundred thirteen".