11210020121 has 8 divisors (see below), whose sum is σ = 11803915200. Its totient is φ = 10616514480.

The previous prime is 11210020109. The next prime is 11210020139. The reversal of 11210020121 is 12102001211.

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

It is not a de Polignac number, because 11210020121 - 2¹⁰ = 11210019097 is a prime.

It is a super-2 number, since 2×11210020121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11210020181) 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, 37310 + ... + 154311.

It is an arithmetic number, because the mean of its divisors is an integer number (1475489400).

Almost surely, 2^11210020121 is an apocalyptic number.

It is an amenable number.

11210020121 is a deficient number, since it is larger than the sum of its proper divisors (593895079).

11210020121 is a wasteful number, since it uses less digits than its factorization.

11210020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194719.

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

Adding to 11210020121 its reverse (12102001211), we get a palindrome (23312021332).

The spelling of 11210020121 in words is "eleven billion, two hundred ten million, twenty thousand, one hundred twenty-one".