10212144121 has 4 divisors (see below), whose sum is σ = 10236517200. Its totient is φ = 10187771044.

The previous prime is 10212144119. The next prime is 10212144197. The reversal of 10212144121 is 12144121201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10212144121 - 2¹ = 10212144119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212144421) 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, 12185911 + ... + 12186748.

It is an arithmetic number, because the mean of its divisors is an integer number (2559129300).

Almost surely, 2^10212144121 is an apocalyptic number.

It is an amenable number.

10212144121 is a deficient number, since it is larger than the sum of its proper divisors (24373079).

10212144121 is an equidigital number, since it uses as much as digits as its factorization.

10212144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24373078.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10212144121 its reverse (12144121201), we get a palindrome (22356265322).

The spelling of 10212144121 in words is "ten billion, two hundred twelve million, one hundred forty-four thousand, one hundred twenty-one".