211212011011 has 2 divisors, whose sum is σ = 211212011012. Its totient is φ = 211212011010.

The previous prime is 211212010993. The next prime is 211212011029. The reversal of 211212011011 is 110110212112.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (211212010993) and next prime (211212011029).

It is a cyclic number.

It is not a de Polignac number, because 211212011011 - 2⁷ = 211212010883 is a prime.

It is a super-2 number, since 2×211212011011² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211212010982 and 211212011000.

It is not a weakly prime, because it can be changed into another prime (211212011041) 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, 105606005505 + 105606005506.

It is an arithmetic number, because the mean of its divisors is an integer number (105606005506).

Almost surely, 2^211212011011 is an apocalyptic number.

211212011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212011011 is an equidigital number, since it uses as much as digits as its factorization.

211212011011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211212011011 its reverse (110110212112), we get a palindrome (321322223123).

The spelling of 211212011011 in words is "two hundred eleven billion, two hundred twelve million, eleven thousand, eleven".