22000022012 has 6 divisors (see below), whose sum is σ = 38500038528. Its totient is φ = 11000011004.

The previous prime is 22000021973. The next prime is 22000022027. The reversal of 22000022012 is 21022000022.

It is a junction number, because it is equal to n+sod(n) for n = 22000021984 and 22000022002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750002748 + ... + 2750002755.

It is an arithmetic number, because the mean of its divisors is an integer number (6416673088).

Almost surely, 2^22000022012 is an apocalyptic number.

It is an amenable number.

22000022012 is a deficient number, since it is larger than the sum of its proper divisors (16500016516).

22000022012 is a wasteful number, since it uses less digits than its factorization.

22000022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500005507 (or 5500005505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22000022012 its reverse (21022000022), we get a palindrome (43022022034).

The spelling of 22000022012 in words is "twenty-two billion, twenty-two thousand, twelve".