21310121001203 has 8 divisors (see below), whose sum is σ = 21373609780848. Its totient is φ = 21246633725184.

The previous prime is 21310121001149. The next prime is 21310121001263. The reversal of 21310121001203 is 30210012101312.

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 21310121001203 - 2¹⁴ = 21310120984819 is a prime.

It is a super-2 number, since 2×21310121001203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310121001263) 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, 32210900 + ... + 32865822.

It is an arithmetic number, because the mean of its divisors is an integer number (2671701222606).

Almost surely, 2^{21310121001203} is an apocalyptic number.

21310121001203 is a deficient number, since it is larger than the sum of its proper divisors (63488779645).

21310121001203 is an equidigital number, since it uses as much as digits as its factorization.

21310121001203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751813.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21310121001203 its reverse (30210012101312), we get a palindrome (51520133102515).

The spelling of 21310121001203 in words is "twenty-one trillion, three hundred ten billion, one hundred twenty-one million, one thousand, two hundred three".