1202111012311 has 4 divisors (see below), whose sum is σ = 1311393831624. Its totient is φ = 1092828193000.

The previous prime is 1202111012287. The next prime is 1202111012341. The reversal of 1202111012311 is 1132101112021.

It is a happy number.

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 1202111012311 - 2¹¹ = 1202111010263 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 (1202111012341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54641409640 + ... + 54641409661.

It is an arithmetic number, because the mean of its divisors is an integer number (327848457906).

Almost surely, 2^{1202111012311} is an apocalyptic number.

1202111012311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1202111012311 is a deficient number, since it is larger than the sum of its proper divisors (109282819313).

1202111012311 is a wasteful number, since it uses less digits than its factorization.

1202111012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109282819312.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1202111012311 its reverse (1132101112021), we get a palindrome (2334212124332).

The spelling of 1202111012311 in words is "one trillion, two hundred two billion, one hundred eleven million, twelve thousand, three hundred eleven".