30121221000033 has 16 divisors (see below), whose sum is σ = 44660281388800. Its totient is φ = 20064501375120.

The previous prime is 30121221000019. The next prime is 30121221000043. The reversal of 30121221000033 is 33000012212103.

It is not a de Polignac number, because 30121221000033 - 2¹⁴ = 30121220983649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30121221000043) 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, 453094618 + ... + 453161091.

It is an arithmetic number, because the mean of its divisors is an integer number (2791267586800).

Almost surely, 2^{30121221000033} is an apocalyptic number.

It is an amenable number.

30121221000033 is a deficient number, since it is larger than the sum of its proper divisors (14539060388767).

30121221000033 is a wasteful number, since it uses less digits than its factorization.

30121221000033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906256949 (or 906256943 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30121221000033 its reverse (33000012212103), we get a palindrome (63121233212136).

The spelling of 30121221000033 in words is "thirty trillion, one hundred twenty-one billion, two hundred twenty-one million, thirty-three", and thus it is an aban number.