22402012 has 12 divisors (see below), whose sum is σ = 39644640. Its totient is φ = 11074976.

The previous prime is 22401979. The next prime is 22402013. The reversal of 22402012 is 21020422.

It is a junction number, because it is equal to n+sod(n) for n = 22401983 and 22402001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402013) 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, 31108 + ... + 31819.

It is an arithmetic number, because the mean of its divisors is an integer number (3303720).

Almost surely, 2^22402012 is an apocalyptic number.

It is an amenable number.

22402012 is a deficient number, since it is larger than the sum of its proper divisors (17242628).

22402012 is a wasteful number, since it uses less digits than its factorization.

22402012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63020 (or 63018 counting only the distinct ones).

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

The square root of 22402012 is about 4733.0763780019. The cubic root of 22402012 is about 281.9003890091.

Adding to 22402012 its reverse (21020422), we get a palindrome (43422434).

The spelling of 22402012 in words is "twenty-two million, four hundred two thousand, twelve".