20221301221312 has 112 divisors (see below), whose sum is σ = 44726194967040. Its totient is φ = 9014464622592.

The previous prime is 20221301221249. The next prime is 20221301221327. The reversal of 20221301221312 is 21312210312202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473512153 + ... + 473554855.

Almost surely, 2^{20221301221312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221301221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22363097483520).

20221301221312 is an abundant number, since it is smaller than the sum of its proper divisors (24504893745728).

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

20221301221312 is a wasteful number, since it uses less digits than its factorization.

20221301221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65658 (or 65648 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20221301221312 its reverse (21312210312202), we get a palindrome (41533511533514).

The spelling of 20221301221312 in words is "twenty trillion, two hundred twenty-one billion, three hundred one million, two hundred twenty-one thousand, three hundred twelve".