1200212002111 has 4 divisors (see below), whose sum is σ = 1201453173712. Its totient is φ = 1198970830512.

The previous prime is 1200212002043. The next prime is 1200212002133. The reversal of 1200212002111 is 1112002120021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200212002111 - 2¹³ = 1200211993919 is a prime.

It is a super-2 number, since 2×1200212002111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200212002091 and 1200212002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200212000111) 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 3 ways as a sum of consecutive naturals, for example, 620584350 + ... + 620586283.

It is an arithmetic number, because the mean of its divisors is an integer number (300363293428).

Almost surely, 2^{1200212002111} is an apocalyptic number.

1200212002111 is a deficient number, since it is larger than the sum of its proper divisors (1241171601).

1200212002111 is an equidigital number, since it uses as much as digits as its factorization.

1200212002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241171600.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200212002111 its reverse (1112002120021), we get a palindrome (2312214122132).

It can be divided in two parts, 12002120021 and 11, that multiplied together give a palindrome (132023320231).

The spelling of 1200212002111 in words is "one trillion, two hundred billion, two hundred twelve million, two thousand, one hundred eleven".