10102134421 has 4 divisors (see below), whose sum is σ = 10267743244. Its totient is φ = 9936525600.

The previous prime is 10102134409. The next prime is 10102134467. The reversal of 10102134421 is 12443120101.

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 1967898321 + 8134236100 = 44361^2 + 90190^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102134421 - 2⁵ = 10102134389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102134821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82804320 + ... + 82804441.

It is an arithmetic number, because the mean of its divisors is an integer number (2566935811).

Almost surely, 2^10102134421 is an apocalyptic number.

It is an amenable number.

10102134421 is a deficient number, since it is larger than the sum of its proper divisors (165608823).

10102134421 is an equidigital number, since it uses as much as digits as its factorization.

10102134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165608822.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10102134421 its reverse (12443120101), we get a palindrome (22545254522).

The spelling of 10102134421 in words is "ten billion, one hundred two million, one hundred thirty-four thousand, four hundred twenty-one".