20211110102123 has 4 divisors (see below), whose sum is σ = 20211119744400. Its totient is φ = 20211100459848.

The previous prime is 20211110102077. The next prime is 20211110102143. The reversal of 20211110102123 is 32120101111202.

It is a happy number.

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 20211110102123 - 2⁶ = 20211110102059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211110102143) 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, 201440 + ... + 6361037.

It is an arithmetic number, because the mean of its divisors is an integer number (5052779936100).

Almost surely, 2^{20211110102123} is an apocalyptic number.

20211110102123 is a deficient number, since it is larger than the sum of its proper divisors (9642277).

20211110102123 is an equidigital number, since it uses as much as digits as its factorization.

20211110102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642276.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20211110102123 its reverse (32120101111202), we get a palindrome (52331211213325).

The spelling of 20211110102123 in words is "twenty trillion, two hundred eleven billion, one hundred ten million, one hundred two thousand, one hundred twenty-three".