302012032020221 has 4 divisors (see below), whose sum is σ = 303593246847744. Its totient is φ = 300430817192700.

The previous prime is 302012032020217. The next prime is 302012032020247. The reversal of 302012032020221 is 122020230210203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 302012032020221 - 2² = 302012032020217 is a prime.

It is a super-2 number, since 2×302012032020221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 302012032020193 and 302012032020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302012032028221) 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, 790607413475 + ... + 790607413856.

It is an arithmetic number, because the mean of its divisors is an integer number (75898311711936).

Almost surely, 2^{302012032020221} is an apocalyptic number.

It is an amenable number.

302012032020221 is a deficient number, since it is larger than the sum of its proper divisors (1581214827523).

302012032020221 is a wasteful number, since it uses less digits than its factorization.

302012032020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581214827522.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 302012032020221 its reverse (122020230210203), we get a palindrome (424032262230424).

The spelling of 302012032020221 in words is "three hundred two trillion, twelve billion, thirty-two million, twenty thousand, two hundred twenty-one".