30001221332 has 6 divisors (see below), whose sum is σ = 52502137338. Its totient is φ = 15000610664.

The previous prime is 30001221311. The next prime is 30001221337. The reversal of 30001221332 is 23312210003.

It can be written as a sum of positive squares in only one way, i.e., 21291479056 + 8709742276 = 145916^2 + 93326^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30001221332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3750152663 + ... + 3750152670.

It is an arithmetic number, because the mean of its divisors is an integer number (8750356223).

Almost surely, 2^30001221332 is an apocalyptic number.

It is an amenable number.

30001221332 is a deficient number, since it is larger than the sum of its proper divisors (22500916006).

30001221332 is a wasteful number, since it uses less digits than its factorization.

30001221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500305337 (or 7500305335 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30001221332 its reverse (23312210003), we get a palindrome (53313431335).

The spelling of 30001221332 in words is "thirty billion, one million, two hundred twenty-one thousand, three hundred thirty-two".