1011211211011 has 2 divisors, whose sum is σ = 1011211211012. Its totient is φ = 1011211211010.

The previous prime is 1011211210979. The next prime is 1011211211039. The reversal of 1011211211011 is 1101121121101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011211211011 - 2⁵ = 1011211210979 is a prime.

It is a super-2 number, since 2×1011211211011² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011211210982 and 1011211211000.

It is not a weakly prime, because it can be changed into another prime (1011211211411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605605505 + 505605605506.

It is an arithmetic number, because the mean of its divisors is an integer number (505605605506).

Almost surely, 2^{1011211211011} is an apocalyptic number.

1011211211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011211211011 is an equidigital number, since it uses as much as digits as its factorization.

1011211211011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1011211211011 its reverse (1101121121101), we get a palindrome (2112332332112).

The spelling of 1011211211011 in words is "one trillion, eleven billion, two hundred eleven million, two hundred eleven thousand, eleven".