30211212212101 has 4 divisors (see below), whose sum is σ = 30211985133900. Its totient is φ = 30210439290304.

The previous prime is 30211212212047. The next prime is 30211212212113. The reversal of 30211212212101 is 10121221211203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5937755436001 + 24273456776100 = 2436751^2 + 4926810^2 .

It is a cyclic number.

It is not a de Polignac number, because 30211212212101 - 2²⁷ = 30211077994373 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 (30211212812101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386402266 + ... + 386480443.

It is an arithmetic number, because the mean of its divisors is an integer number (7552996283475).

Almost surely, 2^{30211212212101} is an apocalyptic number.

It is an amenable number.

30211212212101 is a deficient number, since it is larger than the sum of its proper divisors (772921799).

30211212212101 is an equidigital number, since it uses as much as digits as its factorization.

30211212212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772921798.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 30211212212101 its reverse (10121221211203), we get a palindrome (40332433423304).

The spelling of 30211212212101 in words is "thirty trillion, two hundred eleven billion, two hundred twelve million, two hundred twelve thousand, one hundred one".