10131103442421 has 20 divisors (see below), whose sum is σ = 16298280373452. Its totient is φ = 6234525194688.

The previous prime is 10131103442419. The next prime is 10131103442459. The reversal of 10131103442421 is 12424430113101.

It is a happy number.

10131103442421 is a `hidden beast` number, since 1 + 0 + 1 + 311 + 0 + 344 + 2 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 881664660900 + 9249438781521 = 938970^2 + 3041289^2 .

It is not a de Polignac number, because 10131103442421 - 2¹ = 10131103442419 is a prime.

It is a super-2 number, since 2×10131103442421² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131103442021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4810589376 + ... + 4810591481.

Almost surely, 2^{10131103442421} is an apocalyptic number.

It is an amenable number.

10131103442421 is a deficient number, since it is larger than the sum of its proper divisors (6167176931031).

10131103442421 is an equidigital number, since it uses as much as digits as its factorization.

10131103442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621180882 (or 9621180873 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 10131103442421 its reverse (12424430113101), we get a palindrome (22555533555522).

The spelling of 10131103442421 in words is "ten trillion, one hundred thirty-one billion, one hundred three million, four hundred forty-two thousand, four hundred twenty-one".