30003222121 has 4 divisors (see below), whose sum is σ = 30006776644. Its totient is φ = 29999667600.

The previous prime is 30003222101. The next prime is 30003222127. The reversal of 30003222121 is 12122230003.

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 26843545600 + 3159676521 = 163840^2 + 56211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30003222121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30003222095 and 30003222104.

It is not an unprimeable number, because it can be changed into a prime (30003222127) 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, 1764570 + ... + 1781491.

It is an arithmetic number, because the mean of its divisors is an integer number (7501694161).

Almost surely, 2^30003222121 is an apocalyptic number.

It is an amenable number.

30003222121 is a deficient number, since it is larger than the sum of its proper divisors (3554523).

30003222121 is an equidigital number, since it uses as much as digits as its factorization.

30003222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554522.

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

Adding to 30003222121 its reverse (12122230003), we get a palindrome (42125452124).

The spelling of 30003222121 in words is "thirty billion, three million, two hundred twenty-two thousand, one hundred twenty-one".