1200312021211 has 32 divisors (see below), whose sum is σ = 1297261744128. Its totient is φ = 1106557593600.

The previous prime is 1200312021179. The next prime is 1200312021217. The reversal of 1200312021211 is 1121202130021.

It is not a de Polignac number, because 1200312021211 - 2⁵ = 1200312021179 is a prime.

It is a super-2 number, since 2×1200312021211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200312021217) 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 31 ways as a sum of consecutive naturals, for example, 94484086 + ... + 94496788.

It is an arithmetic number, because the mean of its divisors is an integer number (40539429504).

Almost surely, 2^{1200312021211} is an apocalyptic number.

1200312021211 is a deficient number, since it is larger than the sum of its proper divisors (96949722917).

1200312021211 is a wasteful number, since it uses less digits than its factorization.

1200312021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13371.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1200312021211 its reverse (1121202130021), we get a palindrome (2321514151232).

The spelling of 1200312021211 in words is "one trillion, two hundred billion, three hundred twelve million, twenty-one thousand, two hundred eleven".