30013102121 has 4 divisors (see below), whose sum is σ = 30745129044. Its totient is φ = 29281075200.

The previous prime is 30013102111. The next prime is 30013102129. The reversal of 30013102121 is 12120131003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12440948521 + 17572153600 = 111539^2 + 132560^2 .

It is a cyclic number.

It is not a de Polignac number, because 30013102121 - 2¹⁴ = 30013085737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30013102096 and 30013102105.

It is not an unprimeable number, because it can be changed into a prime (30013102129) 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, 366013400 + ... + 366013481.

It is an arithmetic number, because the mean of its divisors is an integer number (7686282261).

Almost surely, 2^30013102121 is an apocalyptic number.

It is an amenable number.

30013102121 is a deficient number, since it is larger than the sum of its proper divisors (732026923).

30013102121 is an equidigital number, since it uses as much as digits as its factorization.

30013102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732026922.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30013102121 its reverse (12120131003), we get a palindrome (42133233124).

The spelling of 30013102121 in words is "thirty billion, thirteen million, one hundred two thousand, one hundred twenty-one".