22101221002012 has 24 divisors (see below), whose sum is σ = 39082801110080. Its totient is φ = 10934746813440.

The previous prime is 22101221002009. The next prime is 22101221002013. The reversal of 22101221002012 is 21020012210122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101221002013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860212 + ... + 7237627.

Almost surely, 2^{22101221002012} is an apocalyptic number.

It is an amenable number.

22101221002012 is a deficient number, since it is larger than the sum of its proper divisors (16981580108068).

22101221002012 is a wasteful number, since it uses less digits than its factorization.

22101221002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103581 (or 10103579 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22101221002012 its reverse (21020012210122), we get a palindrome (43121233212134).

The spelling of 22101221002012 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-one million, two thousand, twelve".