11121122021001 has 32 divisors (see below), whose sum is σ = 15261305880576. Its totient is φ = 7199265744000.

The previous prime is 11121122020997. The next prime is 11121122021011. The reversal of 11121122021001 is 10012022112111.

It is a happy number.

It is not a de Polignac number, because 11121122021001 - 2² = 11121122020997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11121122021011) 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, 32864670 + ... + 33201336.

It is an arithmetic number, because the mean of its divisors is an integer number (476915808768).

Almost surely, 2^{11121122021001} is an apocalyptic number.

It is an amenable number.

11121122021001 is a deficient number, since it is larger than the sum of its proper divisors (4140183859575).

11121122021001 is a wasteful number, since it uses less digits than its factorization.

11121122021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337973.

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

Adding to 11121122021001 its reverse (10012022112111), we get a palindrome (21133144133112).

The spelling of 11121122021001 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, twenty-one thousand, one".