30031192919221 has 32 divisors (see below), whose sum is σ = 33442164534240. Its totient is φ = 26790347980800.

The previous prime is 30031192919219. The next prime is 30031192919237. The reversal of 30031192919221 is 12291929113003.

It can be written as a sum of positive squares in 16 ways, for example, as 3169517938596 + 26861674980625 = 1780314^2 + 5182825^2 .

It is a cyclic number.

It is not a de Polignac number, because 30031192919221 - 2¹ = 30031192919219 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031192919251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247490661 + ... + 247611973.

It is an arithmetic number, because the mean of its divisors is an integer number (1045067641695).

Almost surely, 2^{30031192919221} is an apocalyptic number.

It is an amenable number.

30031192919221 is a deficient number, since it is larger than the sum of its proper divisors (3410971615019).

30031192919221 is a wasteful number, since it uses less digits than its factorization.

30031192919221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125737.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 30031192919221 in words is "thirty trillion, thirty-one billion, one hundred ninety-two million, nine hundred nineteen thousand, two hundred twenty-one".