10131214021 has 4 divisors (see below), whose sum is σ = 10378316844. Its totient is φ = 9884111200.

The previous prime is 10131214013. The next prime is 10131214033. The reversal of 10131214021 is 12041213101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 955489921 + 9175724100 = 30911^2 + 95790^2 .

It is a cyclic number.

It is not a de Polignac number, because 10131214021 - 2³ = 10131214013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10131213986 and 10131214004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131214081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123551350 + ... + 123551431.

It is an arithmetic number, because the mean of its divisors is an integer number (2594579211).

Almost surely, 2^10131214021 is an apocalyptic number.

It is an amenable number.

10131214021 is a deficient number, since it is larger than the sum of its proper divisors (247102823).

10131214021 is an equidigital number, since it uses as much as digits as its factorization.

10131214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247102822.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10131214021 its reverse (12041213101), we get a palindrome (22172427122).

The spelling of 10131214021 in words is "ten billion, one hundred thirty-one million, two hundred fourteen thousand, twenty-one".