212320221302 has 32 divisors (see below), whose sum is σ = 368885176320. Its totient is φ = 89769345120.

The previous prime is 212320221301. The next prime is 212320221319. The reversal of 212320221302 is 203122023212.

It is a happy number.

It is a super-3 number, since 3×212320221302³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212320221301) 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, 1290527 + ... + 1445717.

It is an arithmetic number, because the mean of its divisors is an integer number (11527661760).

Almost surely, 2^212320221302 is an apocalyptic number.

212320221302 is a deficient number, since it is larger than the sum of its proper divisors (156564955018).

212320221302 is a wasteful number, since it uses less digits than its factorization.

212320221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156516.

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

Adding to 212320221302 its reverse (203122023212), we get a palindrome (415442244514).

The spelling of 212320221302 in words is "two hundred twelve billion, three hundred twenty million, two hundred twenty-one thousand, three hundred two".