210030111121 has 16 divisors (see below), whose sum is σ = 214357968000. Its totient is φ = 205751145600.

The previous prime is 210030111113. The next prime is 210030111131. The reversal of 210030111121 is 121111030012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210030111121 - 2³ = 210030111113 is a prime.

It is a super-2 number, since 2×210030111121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210030111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7342555 + ... + 7371103.

It is an arithmetic number, because the mean of its divisors is an integer number (13397373000).

Almost surely, 2^210030111121 is an apocalyptic number.

It is an amenable number.

210030111121 is a deficient number, since it is larger than the sum of its proper divisors (4327856879).

210030111121 is a wasteful number, since it uses less digits than its factorization.

210030111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29400.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 210030111121 its reverse (121111030012), we get a palindrome (331141141133).

The spelling of 210030111121 in words is "two hundred ten billion, thirty million, one hundred eleven thousand, one hundred twenty-one".