11012122011 has 128 divisors (see below), whose sum is σ = 18464578560. Its totient is φ = 5750784000.

The previous prime is 11012121997. The next prime is 11012122031. The reversal of 11012122011 is 11022121011.

It is not a de Polignac number, because 11012122011 - 2⁹ = 11012121499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11012122031) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57057531 + ... + 57057723.

It is an arithmetic number, because the mean of its divisors is an integer number (144254520).

Almost surely, 2^11012122011 is an apocalyptic number.

11012122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11012122011 is a deficient number, since it is larger than the sum of its proper divisors (7452456549).

11012122011 is a wasteful number, since it uses less digits than its factorization.

11012122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11012122011 its reverse (11022121011), we get a palindrome (22034243022).

It can be divided in two parts, 110 and 12122011, that added together give a palindrome (12122121).

The spelling of 11012122011 in words is "eleven billion, twelve million, one hundred twenty-two thousand, eleven".