20042212 has 12 divisors (see below), whose sum is σ = 35109676. Its totient is φ = 10010880.

The previous prime is 20042173. The next prime is 20042249. The reversal of 20042212 is 21224002.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 8386816 = 3414^2 + 2896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20042192 and 20042201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388 + ... + 7180.

Almost surely, 2^20042212 is an apocalyptic number.

It is an amenable number.

20042212 is a deficient number, since it is larger than the sum of its proper divisors (15067464).

20042212 is a wasteful number, since it uses less digits than its factorization.

20042212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118 (or 5116 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20042212 is about 4476.8529124822. The cubic root of 20042212 is about 271.6325957916.

Adding to 20042212 its reverse (21224002), we get a palindrome (41266214).

The spelling of 20042212 in words is "twenty million, forty-two thousand, two hundred twelve".