1211121110002 has 16 divisors (see below), whose sum is σ = 1825510004352. Its totient is φ = 602623430640.

The previous prime is 1211121109967. The next prime is 1211121110009. The reversal of 1211121110002 is 2000111211121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1211121110009) 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, 984874 + ... + 1841797.

It is an arithmetic number, because the mean of its divisors is an integer number (114094375272).

Almost surely, 2^{1211121110002} is an apocalyptic number.

1211121110002 is a deficient number, since it is larger than the sum of its proper divisors (614388894350).

1211121110002 is a wasteful number, since it uses less digits than its factorization.

1211121110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827713.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211121110002 its reverse (2000111211121), we get a palindrome (3211232321123).

The spelling of 1211121110002 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, two".