12121020111122 has 64 divisors (see below), whose sum is σ = 19861081390080. Its totient is φ = 5514286063104.

The previous prime is 12121020111121. The next prime is 12121020111173. The reversal of 12121020111122 is 22111102012121.

It is a self number, because there is not a number n which added to its sum of digits gives 12121020111122.

It is not an unprimeable number, because it can be changed into a prime (12121020111121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5807866763 + ... + 5807868849.

It is an arithmetic number, because the mean of its divisors is an integer number (310329396720).

Almost surely, 2^{12121020111122} is an apocalyptic number.

12121020111122 is a deficient number, since it is larger than the sum of its proper divisors (7740061278958).

12121020111122 is a wasteful number, since it uses less digits than its factorization.

12121020111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121020111122 its reverse (22111102012121), we get a palindrome (34232122123243).

The spelling of 12121020111122 in words is "twelve trillion, one hundred twenty-one billion, twenty million, one hundred eleven thousand, one hundred twenty-two".