211113030121 has 32 divisors (see below), whose sum is σ = 245521905408. Its totient is φ = 177798758400.

The previous prime is 211113030119. The next prime is 211113030133. The reversal of 211113030121 is 121030311112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211113030121 - 2¹ = 211113030119 is a prime.

It is a super-2 number, since 2×211113030121² (a number of 23 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 = 211113030095 and 211113030104.

It is not an unprimeable number, because it can be changed into a prime (211113030221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63720961 + ... + 63724273.

It is an arithmetic number, because the mean of its divisors is an integer number (7672559544).

Almost surely, 2^211113030121 is an apocalyptic number.

It is an amenable number.

211113030121 is a deficient number, since it is larger than the sum of its proper divisors (34408875287).

211113030121 is a wasteful number, since it uses less digits than its factorization.

211113030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 211113030121 its reverse (121030311112), we get a palindrome (332143341233).

The spelling of 211113030121 in words is "two hundred eleven billion, one hundred thirteen million, thirty thousand, one hundred twenty-one".