11102021121 has 4 divisors (see below), whose sum is σ = 14802694832. Its totient is φ = 7401347412.

The previous prime is 11102021093. The next prime is 11102021137. The reversal of 11102021121 is 12112020111.

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: 12112020111 = 3 ⋅4037340037.

It is not a de Polignac number, because 11102021121 - 2⁶ = 11102021057 is a prime.

It is a super-2 number, since 2×11102021121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102021097 and 11102021106.

It is not an unprimeable number, because it can be changed into a prime (11102021221) 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, 1850336851 + ... + 1850336856.

It is an arithmetic number, because the mean of its divisors is an integer number (3700673708).

Almost surely, 2^11102021121 is an apocalyptic number.

It is an amenable number.

11102021121 is a deficient number, since it is larger than the sum of its proper divisors (3700673711).

11102021121 is an equidigital number, since it uses as much as digits as its factorization.

11102021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700673710.

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

Adding to 11102021121 its reverse (12112020111), we get a palindrome (23214041232).

The spelling of 11102021121 in words is "eleven billion, one hundred two million, twenty-one thousand, one hundred twenty-one".