11211011001031 has 2 divisors, whose sum is σ = 11211011001032. Its totient is φ = 11211011001030.

The previous prime is 11211011000983. The next prime is 11211011001109. The reversal of 11211011001031 is 13010011011211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11211011001031 - 2¹⁵ = 11211010968263 is a prime.

It is a super-2 number, since 2×11211011001031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211011001331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605505500515 + 5605505500516.

It is an arithmetic number, because the mean of its divisors is an integer number (5605505500516).

Almost surely, 2^{11211011001031} is an apocalyptic number.

11211011001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211011001031 is an equidigital number, since it uses as much as digits as its factorization.

11211011001031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 11211011001031 its reverse (13010011011211), we get a palindrome (24221022012242).

The spelling of 11211011001031 in words is "eleven trillion, two hundred eleven billion, eleven million, one thousand, thirty-one".