12211221121102 has 32 divisors (see below), whose sum is σ = 18451421397504. Its totient is φ = 6060917016000.

The previous prime is 12211221121087. The next prime is 12211221121123. The reversal of 12211221121102 is 20112112211221.

It is a happy number.

It is a super-2 number, since 2×12211221121102² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211221121102.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 273630763 + ... + 273675385.

It is an arithmetic number, because the mean of its divisors is an integer number (576606918672).

Almost surely, 2^{12211221121102} is an apocalyptic number.

12211221121102 is a deficient number, since it is larger than the sum of its proper divisors (6240200276402).

12211221121102 is a wasteful number, since it uses less digits than its factorization.

12211221121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46504.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211221121102 its reverse (20112112211221), we get a palindrome (32323333332323).

The spelling of 12211221121102 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred two".