11021121021011 has 4 divisors (see below), whose sum is σ = 11318989156752. Its totient is φ = 10723252885272.

The previous prime is 11021121020971. The next prime is 11021121021017. The reversal of 11021121021011 is 11012012112011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021121021011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021121021017) 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, 148934067815 + ... + 148934067888.

It is an arithmetic number, because the mean of its divisors is an integer number (2829747289188).

Almost surely, 2^{11021121021011} is an apocalyptic number.

11021121021011 is a deficient number, since it is larger than the sum of its proper divisors (297868135741).

11021121021011 is an equidigital number, since it uses as much as digits as its factorization.

11021121021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297868135740.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11021121021011 its reverse (11012012112011), we get a palindrome (22033133133022).

The spelling of 11021121021011 in words is "eleven trillion, twenty-one billion, one hundred twenty-one million, twenty-one thousand, eleven".