11010221121 has 4 divisors (see below), whose sum is σ = 14680294832. Its totient is φ = 7340147412.

The previous prime is 11010221119. The next prime is 11010221143. The reversal of 11010221121 is 12112201011.

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: 12112201011 = 3 ⋅4037400337.

It is not a de Polignac number, because 11010221121 - 2¹ = 11010221119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11010221097 and 11010221106.

It is not an unprimeable number, because it can be changed into a prime (11010226121) 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, 1835036851 + ... + 1835036856.

It is an arithmetic number, because the mean of its divisors is an integer number (3670073708).

Almost surely, 2^11010221121 is an apocalyptic number.

It is an amenable number.

11010221121 is a deficient number, since it is larger than the sum of its proper divisors (3670073711).

11010221121 is an equidigital number, since it uses as much as digits as its factorization.

11010221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670073710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11010221121 its reverse (12112201011), we get a palindrome (23122422132).

The spelling of 11010221121 in words is "eleven billion, ten million, two hundred twenty-one thousand, one hundred twenty-one".