302121212020 has 48 divisors (see below), whose sum is σ = 644221267200. Its totient is φ = 118993694976.

The previous prime is 302121212011. The next prime is 302121212023. The reversal of 302121212020 is 20212121203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 302121211985 and 302121212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302121212023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701809 + ... + 1047271.

It is an arithmetic number, because the mean of its divisors is an integer number (13421276400).

Almost surely, 2^302121212020 is an apocalyptic number.

It is an amenable number.

302121212020 is an abundant number, since it is smaller than the sum of its proper divisors (342100055180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

302121212020 is a wasteful number, since it uses less digits than its factorization.

302121212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346144 (or 346142 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 302121212020 its reverse (20212121203), we get a palindrome (322333333223).

The spelling of 302121212020 in words is "three hundred two billion, one hundred twenty-one million, two hundred twelve thousand, twenty".