11011022121 has 16 divisors (see below), whose sum is σ = 16174611648. Its totient is φ = 6607272000.

The previous prime is 11011022107. The next prime is 11011022123. The reversal of 11011022121 is 12122011011.

It is not a de Polignac number, because 11011022121 - 2⁵ = 11011022089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011022097 and 11011022106.

It is not an unprimeable number, because it can be changed into a prime (11011022123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1648486 + ... + 1655151.

It is an arithmetic number, because the mean of its divisors is an integer number (1010913228).

Almost surely, 2^11011022121 is an apocalyptic number.

11011022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011022121 is a deficient number, since it is larger than the sum of its proper divisors (5163589527).

11011022121 is a wasteful number, since it uses less digits than its factorization.

11011022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303752.

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

Adding to 11011022121 its reverse (12122011011), we get a palindrome (23133033132).

It can be divided in two parts, 110110 and 22121, that added together give a palindrome (132231).

The spelling of 11011022121 in words is "eleven billion, eleven million, twenty-two thousand, one hundred twenty-one".