20422012 has 24 divisors (see below), whose sum is σ = 38619056. Its totient is φ = 9393408.

The previous prime is 20422001. The next prime is 20422021. The reversal of 20422012 is 21022402.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20421983 and 20422001.

It is a congruent number.

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, 22063 + ... + 22969.

Almost surely, 2^20422012 is an apocalyptic number.

It is an amenable number.

20422012 is a deficient number, since it is larger than the sum of its proper divisors (18197044).

20422012 is a wasteful number, since it uses less digits than its factorization.

20422012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1355 counting only the distinct ones).

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

The square root of 20422012 is about 4519.0720286360. The cubic root of 20422012 is about 273.3376831881.

Adding to 20422012 its reverse (21022402), we get a palindrome (41444414).

The spelling of 20422012 in words is "twenty million, four hundred twenty-two thousand, twelve".