1211012230311 has 48 divisors (see below), whose sum is σ = 1893730954752. Its totient is φ = 741318177600.

The previous prime is 1211012230291. The next prime is 1211012230327. The reversal of 1211012230311 is 1130322101121.

1211012230311 is a `hidden beast` number, since 1 + 2 + 110 + 12 + 230 + 311 = 666.

It is not a de Polignac number, because 1211012230311 - 2¹¹ = 1211012228263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211012230331) 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 47 ways as a sum of consecutive naturals, for example, 17832126 + ... + 17899908.

It is an arithmetic number, because the mean of its divisors is an integer number (39452728224).

Almost surely, 2^{1211012230311} is an apocalyptic number.

1211012230311 is a deficient number, since it is larger than the sum of its proper divisors (682718724441).

1211012230311 is a wasteful number, since it uses less digits than its factorization.

1211012230311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68604 (or 68601 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1211012230311 its reverse (1130322101121), we get a palindrome (2341334331432).

The spelling of 1211012230311 in words is "one trillion, two hundred eleven billion, twelve million, two hundred thirty thousand, three hundred eleven".