11202021121 has 8 divisors (see below), whose sum is σ = 11866710080. Its totient is φ = 10544843088.

The previous prime is 11202021101. The next prime is 11202021133. The reversal of 11202021121 is 12112020211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202021121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11202021101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1874661 + ... + 1880626.

It is an arithmetic number, because the mean of its divisors is an integer number (1483338760).

Almost surely, 2^11202021121 is an apocalyptic number.

It is an amenable number.

11202021121 is a deficient number, since it is larger than the sum of its proper divisors (664688959).

11202021121 is a wasteful number, since it uses less digits than its factorization.

11202021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755463.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11202021121 its reverse (12112020211), we get a palindrome (23314041332).

The spelling of 11202021121 in words is "eleven billion, two hundred two million, twenty-one thousand, one hundred twenty-one".