1011100122011 has 4 divisors (see below), whose sum is σ = 1155542996592. Its totient is φ = 866657247432.

The previous prime is 1011100122001. The next prime is 1011100122091. The reversal of 1011100122011 is 1102210011101.

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 1011100122011 - 2³⁴ = 993920252827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011100121983 and 1011100122001.

It is not an unprimeable number, because it can be changed into a prime (1011100122001) 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, 72221437280 + ... + 72221437293.

It is an arithmetic number, because the mean of its divisors is an integer number (288885749148).

Almost surely, 2^{1011100122011} is an apocalyptic number.

1011100122011 is a deficient number, since it is larger than the sum of its proper divisors (144442874581).

1011100122011 is an equidigital number, since it uses as much as digits as its factorization.

1011100122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144442874580.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1011100122011 its reverse (1102210011101), we get a palindrome (2113310133112).

The spelling of 1011100122011 in words is "one trillion, eleven billion, one hundred million, one hundred twenty-two thousand, eleven".