30133312100021 has 8 divisors (see below), whose sum is σ = 32451532210944. Its totient is φ = 27815130992880.

The previous prime is 30133312099997. The next prime is 30133312100057. The reversal of 30133312100021 is 12000121333103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30133312100021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30133312099966 and 30133312100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30133312106021) 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, 8136461 + ... + 11245826.

It is an arithmetic number, because the mean of its divisors is an integer number (4056441526368).

Almost surely, 2^{30133312100021} is an apocalyptic number.

It is an amenable number.

30133312100021 is a deficient number, since it is larger than the sum of its proper divisors (2318220110923).

30133312100021 is a wasteful number, since it uses less digits than its factorization.

30133312100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19501891.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30133312100021 its reverse (12000121333103), we get a palindrome (42133433433124).

The spelling of 30133312100021 in words is "thirty trillion, one hundred thirty-three billion, three hundred twelve million, one hundred thousand, twenty-one".