21014333123 has 16 divisors (see below), whose sum is σ = 24337494720. Its totient is φ = 17772825600.

The previous prime is 21014333117. The next prime is 21014333129. The reversal of 21014333123 is 32133341012.

It is an interprime number because it is at equal distance from previous prime (21014333117) and next prime (21014333129).

It is a cyclic number.

It is not a de Polignac number, because 21014333123 - 2³⁰ = 19940591299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21014333129) 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, 126743 + ... + 241023.

It is an arithmetic number, because the mean of its divisors is an integer number (1521093420).

Almost surely, 2^21014333123 is an apocalyptic number.

21014333123 is a deficient number, since it is larger than the sum of its proper divisors (3323161597).

21014333123 is a wasteful number, since it uses less digits than its factorization.

21014333123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114638.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21014333123 its reverse (32133341012), we get a palindrome (53147674135).

The spelling of 21014333123 in words is "twenty-one billion, fourteen million, three hundred thirty-three thousand, one hundred twenty-three".