21010230012031 has 32 divisors (see below), whose sum is σ = 22822845147648. Its totient is φ = 19226435425920.

The previous prime is 21010230012029. The next prime is 21010230012047. The reversal of 21010230012031 is 13021003201012.

It is a cyclic number.

It is not a de Polignac number, because 21010230012031 - 2¹ = 21010230012029 is a prime.

It is a super-2 number, since 2×21010230012031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010230011996 and 21010230012014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010230012931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1168069620 + ... + 1168087606.

It is an arithmetic number, because the mean of its divisors is an integer number (713213910864).

Almost surely, 2^{21010230012031} is an apocalyptic number.

21010230012031 is a deficient number, since it is larger than the sum of its proper divisors (1812615135617).

21010230012031 is a wasteful number, since it uses less digits than its factorization.

21010230012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19711.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21010230012031 its reverse (13021003201012), we get a palindrome (34031233213043).

The spelling of 21010230012031 in words is "twenty-one trillion, ten billion, two hundred thirty million, twelve thousand, thirty-one".