212111001131 has 2 divisors, whose sum is σ = 212111001132. Its totient is φ = 212111001130.

The previous prime is 212111001127. The next prime is 212111001149. The reversal of 212111001131 is 131100111212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212111001131 - 2² = 212111001127 is a prime.

It is a super-2 number, since 2×212111001131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212111001031) 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, 106055500565 + 106055500566.

It is an arithmetic number, because the mean of its divisors is an integer number (106055500566).

Almost surely, 2^212111001131 is an apocalyptic number.

212111001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111001131 is an equidigital number, since it uses as much as digits as its factorization.

212111001131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 212111001131 its reverse (131100111212), we get a palindrome (343211112343).

The spelling of 212111001131 in words is "two hundred twelve billion, one hundred eleven million, one thousand, one hundred thirty-one".