20690122 has 16 divisors (see below), whose sum is σ = 33038280. Its totient is φ = 9683968.

The previous prime is 20690099. The next prime is 20690143. The reversal of 20690122 is 22109602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18584721 + 2105401 = 4311^2 + 1451^2 .

It is a super-2 number, since 2×20690122² = 856162296749768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20690093 and 20690102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5154 + ... + 8242.

Almost surely, 2^20690122 is an apocalyptic number.

20690122 is a deficient number, since it is larger than the sum of its proper divisors (12348158).

20690122 is a wasteful number, since it uses less digits than its factorization.

20690122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20690122 is about 4548.6395768405. The cubic root of 20690122 is about 274.5286559489.

Adding to 20690122 its reverse (22109602), we get a palindrome (42799724).

The spelling of 20690122 in words is "twenty million, six hundred ninety thousand, one hundred twenty-two".