21320301212109 has 24 divisors (see below), whose sum is σ = 31565094087072. Its totient is φ = 13862764159200.

The previous prime is 21320301212083. The next prime is 21320301212129. The reversal of 21320301212109 is 90121210302312.

21320301212109 is a `hidden beast` number, since 2 + 1 + 320 + 3 + 0 + 121 + 210 + 9 = 666.

It is not a de Polignac number, because 21320301212109 - 2⁷ = 21320301211981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320301212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174973999 + ... + 175095804.

It is an arithmetic number, because the mean of its divisors is an integer number (1315212253628).

Almost surely, 2^{21320301212109} is an apocalyptic number.

It is an amenable number.

21320301212109 is a deficient number, since it is larger than the sum of its proper divisors (10244792874963).

21320301212109 is a wasteful number, since it uses less digits than its factorization.

21320301212109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350069977 (or 350069974 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 21320301212109 in words is "twenty-one trillion, three hundred twenty billion, three hundred one million, two hundred twelve thousand, one hundred nine".