20013122 has 8 divisors (see below), whose sum is σ = 30144972. Its totient is φ = 9964800.

The previous prime is 20013121. The next prime is 20013127. The reversal of 20013122 is 22131002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17884441 + 2128681 = 4229^2 + 1459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20013121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20279 + ... + 21242.

Almost surely, 2^20013122 is an apocalyptic number.

20013122 is a deficient number, since it is larger than the sum of its proper divisors (10131850).

20013122 is a wasteful number, since it uses less digits than its factorization.

20013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41764.

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

The square root of 20013122 is about 4473.6027986400. The cubic root of 20013122 is about 271.5011129945.

Adding to 20013122 its reverse (22131002), we get a palindrome (42144124).

It can be divided in two parts, 200 and 13122, that multiplied together give a square (2624400 = 1620²).

The spelling of 20013122 in words is "twenty million, thirteen thousand, one hundred twenty-two".