20211113232123 has 16 divisors (see below), whose sum is σ = 29405438812416. Its totient is φ = 12246052897440.

The previous prime is 20211113232119. The next prime is 20211113232139. The reversal of 20211113232123 is 32123231111202.

It is not a de Polignac number, because 20211113232123 - 2² = 20211113232119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211113232093 and 20211113232102.

It is not an unprimeable number, because it can be changed into a prime (20211113230123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77533840 + ... + 77794077.

It is an arithmetic number, because the mean of its divisors is an integer number (1837839925776).

Almost surely, 2^{20211113232123} is an apocalyptic number.

20211113232123 is a deficient number, since it is larger than the sum of its proper divisors (9194325580293).

20211113232123 is a wasteful number, since it uses less digits than its factorization.

20211113232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155331874.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20211113232123 its reverse (32123231111202), we get a palindrome (52334344343325).

The spelling of 20211113232123 in words is "twenty trillion, two hundred eleven billion, one hundred thirteen million, two hundred thirty-two thousand, one hundred twenty-three".