30001220001 has 24 divisors (see below), whose sum is σ = 46296741920. Its totient is φ = 18665323776.

The previous prime is 30001219991. The next prime is 30001220017. The reversal of 30001220001 is 10002210003.

It is a happy number.

It is not a de Polignac number, because 30001220001 - 2¹⁰ = 30001218977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30001222001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297840 + ... + 1320753.

Almost surely, 2^30001220001 is an apocalyptic number.

It is an amenable number.

30001220001 is a deficient number, since it is larger than the sum of its proper divisors (16295521919).

30001220001 is a wasteful number, since it uses less digits than its factorization.

30001220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618685 (or 2618682 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 30001220001 its reverse (10002210003), we get a palindrome (40003430004).

The spelling of 30001220001 in words is "thirty billion, one million, two hundred twenty thousand, one".