30002012021 has 8 divisors (see below), whose sum is σ = 30315851160. Its totient is φ = 29688265728.

The previous prime is 30002011999. The next prime is 30002012057. The reversal of 30002012021 is 12021020003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34939921 + 29967072100 = 5911^2 + 173110^2 .

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 30002012021 - 2²⁶ = 29934903157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30002011993 and 30002012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30002011021) 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, 765515 + ... + 803751.

It is an arithmetic number, because the mean of its divisors is an integer number (3789481395).

Almost surely, 2^30002012021 is an apocalyptic number.

It is an amenable number.

30002012021 is a deficient number, since it is larger than the sum of its proper divisors (313839139).

30002012021 is an equidigital number, since it uses as much as digits as its factorization.

30002012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46423.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 30002012021 its reverse (12021020003), we get a palindrome (42023032024).

The spelling of 30002012021 in words is "thirty billion, two million, twelve thousand, twenty-one".