21312340001203 has 8 divisors (see below), whose sum is σ = 21360543649200. Its totient is φ = 21264161188128.

The previous prime is 21312340001191. The next prime is 21312340001233. The reversal of 21312340001203 is 30210004321312.

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 21312340001203 - 2¹⁷ = 21312339870131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312340001233) 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, 4489933 + ... + 7923646.

It is an arithmetic number, because the mean of its divisors is an integer number (2670067956150).

Almost surely, 2^{21312340001203} is an apocalyptic number.

21312340001203 is a deficient number, since it is larger than the sum of its proper divisors (48203647997).

21312340001203 is a wasteful number, since it uses less digits than its factorization.

21312340001203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12417461.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21312340001203 its reverse (30210004321312), we get a palindrome (51522344322515).

The spelling of 21312340001203 in words is "twenty-one trillion, three hundred twelve billion, three hundred forty million, one thousand, two hundred three".