21123400114023 has 8 divisors (see below), whose sum is σ = 28166131724928. Its totient is φ = 14081467622904.

The previous prime is 21123400114001. The next prime is 21123400114027. The reversal of 21123400114023 is 32041100432112.

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

It is not a de Polignac number, because 21123400114023 - 2¹² = 21123400109927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21123400113984 and 21123400114002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123400114027) 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, 199718265 + ... + 199824002.

It is an arithmetic number, because the mean of its divisors is an integer number (3520766465616).

Almost surely, 2^{21123400114023} is an apocalyptic number.

21123400114023 is a deficient number, since it is larger than the sum of its proper divisors (7042731610905).

21123400114023 is a wasteful number, since it uses less digits than its factorization.

21123400114023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399559893.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21123400114023 its reverse (32041100432112), we get a palindrome (53164500546135).

The spelling of 21123400114023 in words is "twenty-one trillion, one hundred twenty-three billion, four hundred million, one hundred fourteen thousand, twenty-three".