1101001212331 has 2 divisors, whose sum is σ = 1101001212332. Its totient is φ = 1101001212330.

The previous prime is 1101001212329. The next prime is 1101001212341. The reversal of 1101001212331 is 1332121001011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101001212331 - 2¹ = 1101001212329 is a prime.

It is a super-2 number, since 2×1101001212331² (a number of 25 digits) contains 22 as substring.

Together with 1101001212329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1101001212341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550500606165 + 550500606166.

It is an arithmetic number, because the mean of its divisors is an integer number (550500606166).

Almost surely, 2^{1101001212331} is an apocalyptic number.

1101001212331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101001212331 is an equidigital number, since it uses as much as digits as its factorization.

1101001212331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1101001212331 its reverse (1332121001011), we get a palindrome (2433122213342).

The spelling of 1101001212331 in words is "one trillion, one hundred one billion, one million, two hundred twelve thousand, three hundred thirty-one".