20022061 has 4 divisors (see below), whose sum is σ = 20228572. Its totient is φ = 19815552.

The previous prime is 20022059. The next prime is 20022089. The reversal of 20022061 is 16022002.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6405961 + 13616100 = 2531^2 + 3690^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022061 - 2¹ = 20022059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022011) 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 3 ways as a sum of consecutive naturals, for example, 103110 + ... + 103303.

It is an arithmetic number, because the mean of its divisors is an integer number (5057143).

Almost surely, 2^20022061 is an apocalyptic number.

It is an amenable number.

20022061 is a deficient number, since it is larger than the sum of its proper divisors (206511).

20022061 is an equidigital number, since it uses as much as digits as its factorization.

20022061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206510.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20022061 is about 4474.6017699903. The cubic root of 20022061 is about 271.5415295972.

Adding to 20022061 its reverse (16022002), we get a palindrome (36044063).

The spelling of 20022061 in words is "twenty million, twenty-two thousand, sixty-one".