2211101133121 has 4 divisors (see below), whose sum is σ = 2211113938644. Its totient is φ = 2211088327600.

The previous prime is 2211101133107. The next prime is 2211101133133. The reversal of 2211101133121 is 1213311011122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 619872782400 + 1591228350721 = 787320^2 + 1261439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211101133121 - 2²⁷ = 2210966915393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211101133191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6140170 + ... + 6490291.

It is an arithmetic number, because the mean of its divisors is an integer number (552778484661).

Almost surely, 2^{2211101133121} is an apocalyptic number.

It is an amenable number.

2211101133121 is a deficient number, since it is larger than the sum of its proper divisors (12805523).

2211101133121 is a wasteful number, since it uses less digits than its factorization.

2211101133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12805522.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2211101133121 its reverse (1213311011122), we get a palindrome (3424412144243).

The spelling of 2211101133121 in words is "two trillion, two hundred eleven billion, one hundred one million, one hundred thirty-three thousand, one hundred twenty-one".