11001201122121 has 16 divisors (see below), whose sum is σ = 16763787875328. Its totient is φ = 6286380829200.

The previous prime is 11001201122117. The next prime is 11001201122299. The reversal of 11001201122121 is 12122110210011.

It is a happy number.

It is not a de Polignac number, because 11001201122121 - 2² = 11001201122117 is a prime.

It is a super-2 number, since 2×11001201122121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11001201122121.

It is not an unprimeable number, because it can be changed into a prime (11001201102121) 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, 8387916 + ... + 9610386.

It is an arithmetic number, because the mean of its divisors is an integer number (1047736742208).

Almost surely, 2^{11001201122121} is an apocalyptic number.

It is an amenable number.

11001201122121 is a deficient number, since it is larger than the sum of its proper divisors (5762586753207).

11001201122121 is a wasteful number, since it uses less digits than its factorization.

11001201122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651012.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11001201122121 its reverse (12122110210011), we get a palindrome (23123311332132).

The spelling of 11001201122121 in words is "eleven trillion, one billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty-one".