1200121002111 has 8 divisors (see below), whose sum is σ = 1684380353920. Its totient is φ = 757971159192.

The previous prime is 1200121002061. The next prime is 1200121002133. The reversal of 1200121002111 is 1112001210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200121002111 - 2¹⁴ = 1200120985727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200121002191) 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, 10527377155 + ... + 10527377268.

It is an arithmetic number, because the mean of its divisors is an integer number (210547544240).

Almost surely, 2^{1200121002111} is an apocalyptic number.

1200121002111 is a deficient number, since it is larger than the sum of its proper divisors (484259351809).

1200121002111 is a wasteful number, since it uses less digits than its factorization.

1200121002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054754445.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200121002111 its reverse (1112001210021), we get a palindrome (2312122212132).

It can be divided in two parts, 12001210021 and 11, that multiplied together give a palindrome (132013310231).

The spelling of 1200121002111 in words is "one trillion, two hundred billion, one hundred twenty-one million, two thousand, one hundred eleven".