2201210312123 has 4 divisors (see below), whose sum is σ = 2201272516320. Its totient is φ = 2201148107928.

The previous prime is 2201210312111. The next prime is 2201210312221. The reversal of 2201210312123 is 3212130121022.

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 2201210312123 - 2¹⁸ = 2201210049979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201210312095 and 2201210312104.

It is not an unprimeable number, because it can be changed into a prime (2201210312923) 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, 31048988 + ... + 31119801.

It is an arithmetic number, because the mean of its divisors is an integer number (550318129080).

Almost surely, 2^{2201210312123} is an apocalyptic number.

2201210312123 is a deficient number, since it is larger than the sum of its proper divisors (62204197).

2201210312123 is an equidigital number, since it uses as much as digits as its factorization.

2201210312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62204196.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2201210312123 its reverse (3212130121022), we get a palindrome (5413340433145).

The spelling of 2201210312123 in words is "two trillion, two hundred one billion, two hundred ten million, three hundred twelve thousand, one hundred twenty-three".