30230202231221 has 4 divisors (see below), whose sum is σ = 30355638755244. Its totient is φ = 30104765707200.

The previous prime is 30230202231211. The next prime is 30230202231233. The reversal of 30230202231221 is 12213220203203.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20300701696900 + 9929500534321 = 4505630^2 + 3151111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30230202231221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230202231211) 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, 62718261650 + ... + 62718262131.

It is an arithmetic number, because the mean of its divisors is an integer number (7588909688811).

Almost surely, 2^{30230202231221} is an apocalyptic number.

It is an amenable number.

30230202231221 is a deficient number, since it is larger than the sum of its proper divisors (125436524023).

30230202231221 is a wasteful number, since it uses less digits than its factorization.

30230202231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125436524022.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30230202231221 its reverse (12213220203203), we get a palindrome (42443422434424).

The spelling of 30230202231221 in words is "thirty trillion, two hundred thirty billion, two hundred two million, two hundred thirty-one thousand, two hundred twenty-one".