2201321123123 has 4 divisors (see below), whose sum is σ = 2201324184648. Its totient is φ = 2201318061600.

The previous prime is 2201321123119. The next prime is 2201321123143. The reversal of 2201321123123 is 3213211231022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2201321123123 - 2² = 2201321123119 is a prime.

It is a super-2 number, since 2×2201321123123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201321123143) 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, 200315 + ... + 2107787.

It is an arithmetic number, because the mean of its divisors is an integer number (550331046162).

Almost surely, 2^{2201321123123} is an apocalyptic number.

2201321123123 is a deficient number, since it is larger than the sum of its proper divisors (3061525).

2201321123123 is a wasteful number, since it uses less digits than its factorization.

2201321123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061524.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2201321123123 its reverse (3213211231022), we get a palindrome (5414532354145).

The spelling of 2201321123123 in words is "two trillion, two hundred one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-three".