30111211013221 has 8 divisors (see below), whose sum is σ = 32606615243384. Its totient is φ = 27641400672960.

The previous prime is 30111211013201. The next prime is 30111211013249. The reversal of 30111211013221 is 12231011211103.

It can be written as a sum of positive squares in 4 ways, for example, as 1769535797121 + 28341675216100 = 1330239^2 + 5323690^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30111211013221 - 2¹⁵ = 30111210980453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111211013201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6398470026 + ... + 6398474731.

It is an arithmetic number, because the mean of its divisors is an integer number (4075826905423).

Almost surely, 2^{30111211013221} is an apocalyptic number.

It is an amenable number.

30111211013221 is a deficient number, since it is larger than the sum of its proper divisors (2495404230163).

30111211013221 is a wasteful number, since it uses less digits than its factorization.

30111211013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796944951.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 30111211013221 its reverse (12231011211103), we get a palindrome (42342222224324).

The spelling of 30111211013221 in words is "thirty trillion, one hundred eleven billion, two hundred eleven million, thirteen thousand, two hundred twenty-one".