30030402121 has 2 divisors, whose sum is σ = 30030402122. Its totient is φ = 30030402120.

The previous prime is 30030402113. The next prime is 30030402151. The reversal of 30030402121 is 12120403003.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22657775625 + 7372626496 = 150525^2 + 85864^2 .

It is a cyclic number.

It is not a de Polignac number, because 30030402121 - 2³ = 30030402113 is a prime.

It is a super-2 number, since 2×30030402121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30030402095 and 30030402104.

It is not a weakly prime, because it can be changed into another prime (30030402151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015201060 + 15015201061.

It is an arithmetic number, because the mean of its divisors is an integer number (15015201061).

Almost surely, 2^30030402121 is an apocalyptic number.

It is an amenable number.

30030402121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30030402121 is an equidigital number, since it uses as much as digits as its factorization.

30030402121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30030402121 its reverse (12120403003), we get a palindrome (42150805124).

The spelling of 30030402121 in words is "thirty billion, thirty million, four hundred two thousand, one hundred twenty-one".