21300102123012 has 18 divisors (see below), whose sum is σ = 53841924811038. Its totient is φ = 7100034040992.

The previous prime is 21300102122993. The next prime is 21300102123029. The reversal of 21300102123012 is 21032120100312.

21300102123012 is a `hidden beast` number, since 21 + 300 + 102 + 1 + 230 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10962230977476 + 10337871145536 = 3310926^2 + 3215256^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295834751673 + ... + 295834751744.

Almost surely, 2^{21300102123012} is an apocalyptic number.

It is an amenable number.

21300102123012 is an abundant number, since it is smaller than the sum of its proper divisors (32541822688026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21300102123012 is a wasteful number, since it uses less digits than its factorization.

21300102123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591669503427 (or 591669503422 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21300102123012 its reverse (21032120100312), we get a palindrome (42332222223324).

The spelling of 21300102123012 in words is "twenty-one trillion, three hundred billion, one hundred two million, one hundred twenty-three thousand, twelve".