30212033312221 has 4 divisors (see below), whose sum is σ = 30329589862332. Its totient is φ = 30094476762112.

The previous prime is 30212033312203. The next prime is 30212033312239. The reversal of 30212033312221 is 12221333021203.

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

It is an interprime number because it is at equal distance from previous prime (30212033312203) and next prime (30212033312239).

It can be written as a sum of positive squares in 2 ways, for example, as 29816787225625 + 395246086596 = 5460475^2 + 628686^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212033312221 - 2¹⁹ = 30212032787933 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 (30212033312821) 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, 58778274670 + ... + 58778275183.

It is an arithmetic number, because the mean of its divisors is an integer number (7582397465583).

Almost surely, 2^{30212033312221} is an apocalyptic number.

It is an amenable number.

30212033312221 is a deficient number, since it is larger than the sum of its proper divisors (117556550111).

30212033312221 is a wasteful number, since it uses less digits than its factorization.

30212033312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117556550110.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 30212033312221 its reverse (12221333021203), we get a palindrome (42433366333424).

The spelling of 30212033312221 in words is "thirty trillion, two hundred twelve billion, thirty-three million, three hundred twelve thousand, two hundred twenty-one".