21312210132007 has 8 divisors (see below), whose sum is σ = 21317303078384. Its totient is φ = 21307117471488.

The previous prime is 21312210132001. The next prime is 21312210132023. The reversal of 21312210132007 is 70023101221312.

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

It is a cyclic number.

It is not a de Polignac number, because 21312210132007 - 2³⁹ = 20762454318119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312210132001) 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, 243460348 + ... + 243547870.

It is an arithmetic number, because the mean of its divisors is an integer number (2664662884798).

Almost surely, 2^{21312210132007} is an apocalyptic number.

21312210132007 is a deficient number, since it is larger than the sum of its proper divisors (5092946377).

21312210132007 is an equidigital number, since it uses as much as digits as its factorization.

21312210132007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142929.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 21312210132007 its reverse (70023101221312), we get a palindrome (91335311353319).

The spelling of 21312210132007 in words is "twenty-one trillion, three hundred twelve billion, two hundred ten million, one hundred thirty-two thousand, seven".