30233131331221 has 24 divisors (see below), whose sum is σ = 37880438954904. Its totient is φ = 23916950830080.

The previous prime is 30233131331159. The next prime is 30233131331261. The reversal of 30233131331221 is 12213313133203.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6227590124196 + 24005541207025 = 2495514^2 + 4899545^2 .

It is not a de Polignac number, because 30233131331221 - 2¹³ = 30233131323029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30233131331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30233131331261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311481 + ... + 7782241.

It is an arithmetic number, because the mean of its divisors is an integer number (1578351623121).

Almost surely, 2^{30233131331221} is an apocalyptic number.

It is an amenable number.

30233131331221 is a deficient number, since it is larger than the sum of its proper divisors (7647307623683).

30233131331221 is a wasteful number, since it uses less digits than its factorization.

30233131331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477141 (or 7477134 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 30233131331221 its reverse (12213313133203), we get a palindrome (42446444464424).

It can be divided in two parts, 3023313 and 1331221, that added together give a palindrome (4354534).

The spelling of 30233131331221 in words is "thirty trillion, two hundred thirty-three billion, one hundred thirty-one million, three hundred thirty-one thousand, two hundred twenty-one".