30124111044221 has 16 divisors (see below), whose sum is σ = 32100404839920. Its totient is φ = 28170528522240.

The previous prime is 30124111044199. The next prime is 30124111044301. The reversal of 30124111044221 is 12244011142103.

It can be written as a sum of positive squares in 8 ways, for example, as 6116668776100 + 24007442268121 = 2473190^2 + 4899739^2 .

It is a cyclic number.

It is not a de Polignac number, because 30124111044221 - 2²² = 30124106849917 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 (30124111044821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82238645 + ... + 82604133.

It is an arithmetic number, because the mean of its divisors is an integer number (2006275302495).

Almost surely, 2^{30124111044221} is an apocalyptic number.

It is an amenable number.

30124111044221 is a deficient number, since it is larger than the sum of its proper divisors (1976293795699).

30124111044221 is a wasteful number, since it uses less digits than its factorization.

30124111044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396544.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 30124111044221 its reverse (12244011142103), we get a palindrome (42368122186324).

The spelling of 30124111044221 in words is "thirty trillion, one hundred twenty-four billion, one hundred eleven million, forty-four thousand, two hundred twenty-one".