21010100232331 has 16 divisors (see below), whose sum is σ = 25069767782400. Its totient is φ = 17215879130208.

The previous prime is 21010100232323. The next prime is 21010100232367. The reversal of 21010100232331 is 13323200101012.

It is a cyclic number.

It is not a de Polignac number, because 21010100232331 - 2³ = 21010100232323 is a prime.

It is a super-2 number, since 2×21010100232331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010100232299 and 21010100232308.

It is not an unprimeable number, because it can be changed into a prime (21010100238331) 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 15 ways as a sum of consecutive naturals, for example, 36811036 + ... + 37377433.

It is an arithmetic number, because the mean of its divisors is an integer number (1566860486400).

Almost surely, 2^{21010100232331} is an apocalyptic number.

21010100232331 is a deficient number, since it is larger than the sum of its proper divisors (4059667550069).

21010100232331 is a wasteful number, since it uses less digits than its factorization.

21010100232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74190258.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21010100232331 its reverse (13323200101012), we get a palindrome (34333300333343).

The spelling of 21010100232331 in words is "twenty-one trillion, ten billion, one hundred million, two hundred thirty-two thousand, three hundred thirty-one".