10010221121 has 4 divisors (see below), whose sum is σ = 10031656752. Its totient is φ = 9988785492.

The previous prime is 10010221103. The next prime is 10010221157. The reversal of 10010221121 is 12112201001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12112201001 = 3167 ⋅3824503.

It is a cyclic number.

It is not a de Polignac number, because 10010221121 - 2¹⁰ = 10010220097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10010221021) 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, 10717115 + ... + 10718048.

It is an arithmetic number, because the mean of its divisors is an integer number (2507914188).

Almost surely, 2^10010221121 is an apocalyptic number.

It is an amenable number.

10010221121 is a deficient number, since it is larger than the sum of its proper divisors (21435631).

10010221121 is an equidigital number, since it uses as much as digits as its factorization.

10010221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435630.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10010221121 its reverse (12112201001), we get a palindrome (22122422122).

The spelling of 10010221121 in words is "ten billion, ten million, two hundred twenty-one thousand, one hundred twenty-one".