12111211001222 has 16 divisors (see below), whose sum is σ = 18426642015600. Its totient is φ = 5969321981952.

The previous prime is 12111211001203. The next prime is 12111211001249. The reversal of 12111211001222 is 22210011211121.

It is a super-2 number, since 2×12111211001222² (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 12111211001222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81171683 + ... + 81320750.

It is an arithmetic number, because the mean of its divisors is an integer number (1151665125975).

Almost surely, 2^{12111211001222} is an apocalyptic number.

12111211001222 is a deficient number, since it is larger than the sum of its proper divisors (6315431014378).

12111211001222 is a wasteful number, since it uses less digits than its factorization.

12111211001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162492967.

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

Adding to 12111211001222 its reverse (22210011211121), we get a palindrome (34321222212343).

The spelling of 12111211001222 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one thousand, two hundred twenty-two".