22002001012 has 12 divisors (see below), whose sum is σ = 39544137220. Its totient is φ = 10703676096.

The previous prime is 22002000991. The next prime is 22002001019. The reversal of 22002001012 is 21010020022.

It can be written as a sum of positive squares in 2 ways, for example, as 16691089636 + 5310911376 = 129194^2 + 72876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22002001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002001019) 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, 74330937 + ... + 74331232.

Almost surely, 2^22002001012 is an apocalyptic number.

It is an amenable number.

22002001012 is a deficient number, since it is larger than the sum of its proper divisors (17542136208).

22002001012 is a wasteful number, since it uses less digits than its factorization.

22002001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148662210 (or 148662208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22002001012 its reverse (21010020022), we get a palindrome (43012021034).

It can be divided in two parts, 220020010 and 12, that added together give a palindrome (220020022).

The spelling of 22002001012 in words is "twenty-two billion, two million, one thousand, twelve".