1121011211011 has 4 divisors (see below), whose sum is σ = 1121015207800. Its totient is φ = 1121007214224.

The previous prime is 1121011210999. The next prime is 1121011211017. The reversal of 1121011211011 is 1101121101211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121011211011 - 2⁷ = 1121011210883 is a prime.

It is a super-2 number, since 2×1121011211011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121011210982 and 1121011211000.

It is not an unprimeable number, because it can be changed into a prime (1121011211017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543101 + ... + 2150158.

It is an arithmetic number, because the mean of its divisors is an integer number (280253801950).

Almost surely, 2^{1121011211011} is an apocalyptic number.

1121011211011 is a deficient number, since it is larger than the sum of its proper divisors (3996789).

1121011211011 is an equidigital number, since it uses as much as digits as its factorization.

1121011211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996788.

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

Adding to 1121011211011 its reverse (1101121101211), we get a palindrome (2222132312222).

The spelling of 1121011211011 in words is "one trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, eleven".