302012112221 has 4 divisors (see below), whose sum is σ = 303576942012. Its totient is φ = 300447282432.

The previous prime is 302012112217. The next prime is 302012112229. The reversal of 302012112221 is 122211210203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122211210203 = 229 ⋅533673407.

It can be written as a sum of positive squares in 2 ways, for example, as 214544049721 + 87468062500 = 463189^2 + 295750^2 .

It is a cyclic number.

It is not a de Polignac number, because 302012112221 - 2² = 302012112217 is a prime.

It is a super-2 number, since 2×302012112221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 302012112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302012112229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782414606 + ... + 782414991.

It is an arithmetic number, because the mean of its divisors is an integer number (75894235503).

Almost surely, 2^302012112221 is an apocalyptic number.

It is an amenable number.

302012112221 is a deficient number, since it is larger than the sum of its proper divisors (1564829791).

302012112221 is a wasteful number, since it uses less digits than its factorization.

302012112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564829790.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 302012112221 its reverse (122211210203), we get a palindrome (424223322424).

The spelling of 302012112221 in words is "three hundred two billion, twelve million, one hundred twelve thousand, two hundred twenty-one".