30001221011 has 4 divisors (see below), whose sum is σ = 30032119224. Its totient is φ = 29970322800.

The previous prime is 30001220987. The next prime is 30001221017. The reversal of 30001221011 is 11012210003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11012210003 = 17 ⋅647777059.

It is a cyclic number.

It is not a de Polignac number, because 30001221011 - 2⁶ = 30001220947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30001220983 and 30001221001.

It is not an unprimeable number, because it can be changed into a prime (30001221017) 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, 15447650 + ... + 15449591.

It is an arithmetic number, because the mean of its divisors is an integer number (7508029806).

Almost surely, 2^30001221011 is an apocalyptic number.

30001221011 is a deficient number, since it is larger than the sum of its proper divisors (30898213).

30001221011 is an equidigital number, since it uses as much as digits as its factorization.

30001221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30898212.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 30001221011 its reverse (11012210003), we get a palindrome (41013431014).

The spelling of 30001221011 in words is "thirty billion, one million, two hundred twenty-one thousand, eleven".