30011311220 has 24 divisors (see below), whose sum is σ = 68753186208. Its totient is φ = 10913204000.

The previous prime is 30011311189. The next prime is 30011311247. The reversal of 30011311220 is 2211311003.

It is a super-2 number, since 2×30011311220² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30011311195 and 30011311204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68207306 + ... + 68207745.

It is an arithmetic number, because the mean of its divisors is an integer number (2864716092).

Almost surely, 2^30011311220 is an apocalyptic number.

It is an amenable number.

30011311220 is an abundant number, since it is smaller than the sum of its proper divisors (38741874988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30011311220 is a wasteful number, since it uses less digits than its factorization.

30011311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136415071 (or 136415069 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30011311220 its reverse (2211311003), we get a palindrome (32222622223).

The spelling of 30011311220 in words is "thirty billion, eleven million, three hundred eleven thousand, two hundred twenty".