20221212313302 has 128 divisors (see below), whose sum is σ = 54315581902848. Its totient is φ = 4846879900800.

The previous prime is 20221212313277. The next prime is 20221212313319. The reversal of 20221212313302 is 20331321212202.

It is a super-2 number, since 2×20221212313302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20976013 + ... + 21918839.

It is an arithmetic number, because the mean of its divisors is an integer number (424340483616).

Almost surely, 2^{20221212313302} is an apocalyptic number.

20221212313302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221212313302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27157790951424).

20221212313302 is an abundant number, since it is smaller than the sum of its proper divisors (34094369589546).

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

20221212313302 is a wasteful number, since it uses less digits than its factorization.

20221212313302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946434.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20221212313302 its reverse (20331321212202), we get a palindrome (40552533525504).

The spelling of 20221212313302 in words is "twenty trillion, two hundred twenty-one billion, two hundred twelve million, three hundred thirteen thousand, three hundred two".