11121122001021 has 32 divisors (see below), whose sum is σ = 15256313653248. Its totient is φ = 7202552524800.

The previous prime is 11121122001013. The next prime is 11121122001043. The reversal of 11121122001021 is 12010022112111.

It is a happy number.

It is not a de Polignac number, because 11121122001021 - 2³ = 11121122001013 is a prime.

It is a super-2 number, since 2×11121122001021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121122001061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9712846 + ... + 10797296.

It is an arithmetic number, because the mean of its divisors is an integer number (476759801664).

Almost surely, 2^{11121122001021} is an apocalyptic number.

It is an amenable number.

11121122001021 is a deficient number, since it is larger than the sum of its proper divisors (4135191652227).

11121122001021 is a wasteful number, since it uses less digits than its factorization.

11121122001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085041.

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

Adding to 11121122001021 its reverse (12010022112111), we get a palindrome (23131144113132).

The spelling of 11121122001021 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, one thousand, twenty-one".