2212020321 has 16 divisors (see below), whose sum is σ = 3461798784. Its totient is φ = 1229848704.

The previous prime is 2212020287. The next prime is 2212020323. The reversal of 2212020321 is 1230202122.

It is a happy number.

It is not a de Polignac number, because 2212020321 - 2²³ = 2203631713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212020321.

It is not an unprimeable number, because it can be changed into a prime (2212020323) 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, 1422660 + ... + 1424213.

It is an arithmetic number, because the mean of its divisors is an integer number (216362424).

Almost surely, 2^2212020321 is an apocalyptic number.

2212020321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2212020321 is a deficient number, since it is larger than the sum of its proper divisors (1249778463).

2212020321 is a wasteful number, since it uses less digits than its factorization.

2212020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846920.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2212020321 is about 47032.1200989281. The cubic root of 2212020321 is about 1302.9558620129.

Adding to 2212020321 its reverse (1230202122), we get a palindrome (3442222443).

The spelling of 2212020321 in words is "two billion, two hundred twelve million, twenty thousand, three hundred twenty-one".