12121201111002 has 16 divisors (see below), whose sum is σ = 24275029959360. Its totient is φ = 4034962414112.

The previous prime is 12121201110989. The next prime is 12121201111007. The reversal of 12121201111002 is 20011110212121.

It is a happy number.

It is a super-2 number, since 2×12121201111002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121201111007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359484227 + ... + 1359493142.

It is an arithmetic number, because the mean of its divisors is an integer number (1517189372460).

Almost surely, 2^{12121201111002} is an apocalyptic number.

12121201111002 is an abundant number, since it is smaller than the sum of its proper divisors (12153828848358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121201111002 is a wasteful number, since it uses less digits than its factorization.

12121201111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718978117.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12121201111002 its reverse (20011110212121), we get a palindrome (32132311323123).

The spelling of 12121201111002 in words is "twelve trillion, one hundred twenty-one billion, two hundred one million, one hundred eleven thousand, two".