202111102123 has 8 divisors (see below), whose sum is σ = 231722087648. Its totient is φ = 172684609344.

The previous prime is 202111102117. The next prime is 202111102147. The reversal of 202111102123 is 321201111202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202111102123 - 2¹³ = 202111093931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202111102097 and 202111102106.

It is not an unprimeable number, because it can be changed into a prime (202111102183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46120836 + ... + 46125217.

It is an arithmetic number, because the mean of its divisors is an integer number (28965260956).

Almost surely, 2^202111102123 is an apocalyptic number.

202111102123 is a deficient number, since it is larger than the sum of its proper divisors (29610985525).

202111102123 is an equidigital number, since it uses as much as digits as its factorization.

202111102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92246373.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 202111102123 its reverse (321201111202), we get a palindrome (523312213325).

The spelling of 202111102123 in words is "two hundred two billion, one hundred eleven million, one hundred two thousand, one hundred twenty-three".