722021210212 has 6 divisors (see below), whose sum is σ = 1263537117878. Its totient is φ = 361010605104.

The previous prime is 722021210189. The next prime is 722021210227. The reversal of 722021210212 is 212012120227.

It can be written as a sum of positive squares in only one way, i.e., 721235753536 + 785456676 = 849256^2 + 28026^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90252651273 + ... + 90252651280.

Almost surely, 2^722021210212 is an apocalyptic number.

It is an amenable number.

722021210212 is a deficient number, since it is larger than the sum of its proper divisors (541515907666).

722021210212 is a wasteful number, since it uses less digits than its factorization.

722021210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180505302557 (or 180505302555 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 722021210212 its reverse (212012120227), we get a palindrome (934033330439).

The spelling of 722021210212 in words is "seven hundred twenty-two billion, twenty-one million, two hundred ten thousand, two hundred twelve".