30201231220 has 24 divisors (see below), whose sum is σ = 63543874464. Its totient is φ = 12057389856.

The previous prime is 30201231209. The next prime is 30201231239. The reversal of 30201231220 is 2213210203.

It is a super-2 number, since 2×30201231220² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30201231194 and 30201231203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433194 + ... + 1454113.

It is an arithmetic number, because the mean of its divisors is an integer number (2647661436).

Almost surely, 2^30201231220 is an apocalyptic number.

It is an amenable number.

30201231220 is an abundant number, since it is smaller than the sum of its proper divisors (33342643244).

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

30201231220 is a wasteful number, since it uses less digits than its factorization.

30201231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887839 (or 2887837 counting only the distinct ones).

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

Adding to 30201231220 its reverse (2213210203), we get a palindrome (32414441423).

The spelling of 30201231220 in words is "thirty billion, two hundred one million, two hundred thirty-one thousand, two hundred twenty".