10213031221121 has 4 divisors (see below), whose sum is σ = 10235089604352. Its totient is φ = 10190972837892.

The previous prime is 10213031221079. The next prime is 10213031221177. The reversal of 10213031221121 is 12112213031201.

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 10213031221121 - 2¹⁰ = 10213031220097 is a prime.

It is a super-4 number, since 4×10213031221121⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10213031221093 and 10213031221102.

It is not an unprimeable number, because it can be changed into a prime (10213031281121) 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, 11029190921 + ... + 11029191846.

It is an arithmetic number, because the mean of its divisors is an integer number (2558772401088).

Almost surely, 2^{10213031221121} is an apocalyptic number.

It is an amenable number.

10213031221121 is a deficient number, since it is larger than the sum of its proper divisors (22058383231).

10213031221121 is an equidigital number, since it uses as much as digits as its factorization.

10213031221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058383230.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 10213031221121 its reverse (12112213031201), we get a palindrome (22325244252322).

The spelling of 10213031221121 in words is "ten trillion, two hundred thirteen billion, thirty-one million, two hundred twenty-one thousand, one hundred twenty-one".