21203101312023 has 8 divisors (see below), whose sum is σ = 28271908730736. Its totient is φ = 14134847384000.

The previous prime is 21203101311971. The next prime is 21203101312073. The reversal of 21203101312023 is 32021310130212.

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 21203101312023 - 2¹⁶ = 21203101246487 is a prime.

It is a super-2 number, since 2×21203101312023² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203101312073) 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, 138283278 + ... + 138436523.

It is an arithmetic number, because the mean of its divisors is an integer number (3533988591342).

Almost surely, 2^{21203101312023} is an apocalyptic number.

21203101312023 is a deficient number, since it is larger than the sum of its proper divisors (7068807418713).

21203101312023 is a wasteful number, since it uses less digits than its factorization.

21203101312023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276745345.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21203101312023 its reverse (32021310130212), we get a palindrome (53224411442235).

The spelling of 21203101312023 in words is "twenty-one trillion, two hundred three billion, one hundred one million, three hundred twelve thousand, twenty-three".