22000001012 has 48 divisors (see below), whose sum is σ = 43410608640. Its totient is φ = 9664972800.

The previous prime is 22000001003. The next prime is 22000001017. The reversal of 22000001012 is 21010000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000001017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093508 + ... + 1113444.

It is an arithmetic number, because the mean of its divisors is an integer number (904387680).

Almost surely, 2^22000001012 is an apocalyptic number.

22000001012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22000001012 is a deficient number, since it is larger than the sum of its proper divisors (21410607628).

22000001012 is a wasteful number, since it uses less digits than its factorization.

22000001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20792 (or 20790 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 22000001012 its reverse (21010000022), we get a palindrome (43010001034).

It can be divided in two parts, 220000010 and 12, that added together give a palindrome (220000022).

The spelling of 22000001012 in words is "twenty-two billion, one thousand, twelve".