21300101010123 has 16 divisors (see below), whose sum is σ = 31411375573536. Its totient is φ = 12753490832640.

The previous prime is 21300101010107. The next prime is 21300101010143. The reversal of 21300101010123 is 32101010100312.

It is a happy number.

It is not a de Polignac number, because 21300101010123 - 2⁴ = 21300101010107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300101010143) 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, 7380490938 + ... + 7380493823.

It is an arithmetic number, because the mean of its divisors is an integer number (1963210973346).

Almost surely, 2^{21300101010123} is an apocalyptic number.

21300101010123 is a deficient number, since it is larger than the sum of its proper divisors (10111274563413).

21300101010123 is a wasteful number, since it uses less digits than its factorization.

21300101010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14760984814.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21300101010123 its reverse (32101010100312), we get a palindrome (53401111110435).

The spelling of 21300101010123 in words is "twenty-one trillion, three hundred billion, one hundred one million, ten thousand, one hundred twenty-three".