30212422243021 has 4 divisors (see below), whose sum is σ = 31989623551452. Its totient is φ = 28435220934592.

The previous prime is 30212422242983. The next prime is 30212422243027. The reversal of 30212422243021 is 12034222421203.

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 23258811462121 + 6953610780900 = 4822739^2 + 2636970^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30212422243021 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 (30212422243027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888600654190 + ... + 888600654223.

It is an arithmetic number, because the mean of its divisors is an integer number (7997405887863).

Almost surely, 2^{30212422243021} is an apocalyptic number.

It is an amenable number.

30212422243021 is a deficient number, since it is larger than the sum of its proper divisors (1777201308431).

30212422243021 is a wasteful number, since it uses less digits than its factorization.

30212422243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777201308430.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 30212422243021 its reverse (12034222421203), we get a palindrome (42246644664224).

The spelling of 30212422243021 in words is "thirty trillion, two hundred twelve billion, four hundred twenty-two million, two hundred forty-three thousand, twenty-one".