30120221011 has 4 divisors (see below), whose sum is σ = 30192107400. Its totient is φ = 30048334624.

The previous prime is 30120220997. The next prime is 30120221057. The reversal of 30120221011 is 11012202103.

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

It is a cyclic number.

It is not a de Polignac number, because 30120221011 - 2¹³ = 30120212819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30120220982 and 30120221000.

It is not an unprimeable number, because it can be changed into a prime (30120221081) 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, 35942566 + ... + 35943403.

It is an arithmetic number, because the mean of its divisors is an integer number (7548026850).

Almost surely, 2^30120221011 is an apocalyptic number.

30120221011 is a deficient number, since it is larger than the sum of its proper divisors (71886389).

30120221011 is an equidigital number, since it uses as much as digits as its factorization.

30120221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71886388.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30120221011 its reverse (11012202103), we get a palindrome (41132423114).

The spelling of 30120221011 in words is "thirty billion, one hundred twenty million, two hundred twenty-one thousand, eleven".