221123110002131 has 4 divisors (see below), whose sum is σ = 221135402149200. Its totient is φ = 221110817855064.

The previous prime is 221123110002083. The next prime is 221123110002133. The reversal of 221123110002131 is 131200011321122.

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

It is a cyclic number.

It is not a de Polignac number, because 221123110002131 - 2⁴⁶ = 150754365824467 is a prime.

It is a super-2 number, since 2×221123110002131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221123110002133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6146046551 + ... + 6146082528.

It is an arithmetic number, because the mean of its divisors is an integer number (55283850537300).

Almost surely, 2^{221123110002131} is an apocalyptic number.

221123110002131 is a deficient number, since it is larger than the sum of its proper divisors (12292147069).

221123110002131 is a wasteful number, since it uses less digits than its factorization.

221123110002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12292147068.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 221123110002131 its reverse (131200011321122), we get a palindrome (352323121323253).

The spelling of 221123110002131 in words is "two hundred twenty-one trillion, one hundred twenty-three billion, one hundred ten million, two thousand, one hundred thirty-one".