21010131201 has 32 divisors (see below), whose sum is σ = 29868048000. Its totient is φ = 13099276800.

The previous prime is 21010131199. The next prime is 21010131203. The reversal of 21010131201 is 10213101012.

It is an interprime number because it is at equal distance from previous prime (21010131199) and next prime (21010131203).

It is not a de Polignac number, because 21010131201 - 2¹ = 21010131199 is a prime.

It is a super-2 number, since 2×21010131201² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21010131203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2003965 + ... + 2014421.

It is an arithmetic number, because the mean of its divisors is an integer number (933376500).

Almost surely, 2^21010131201 is an apocalyptic number.

It is an amenable number.

21010131201 is a deficient number, since it is larger than the sum of its proper divisors (8857916799).

21010131201 is a wasteful number, since it uses less digits than its factorization.

21010131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10929.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21010131201 its reverse (10213101012), we get a palindrome (31223232213).

The spelling of 21010131201 in words is "twenty-one billion, ten million, one hundred thirty-one thousand, two hundred one".