21222363202160 has 120 divisors (see below), whose sum is σ = 50998043416320. Its totient is φ = 8213009333760.

The previous prime is 21222363202141. The next prime is 21222363202163. The reversal of 21222363202160 is 6120236322212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222363202163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319710734 + ... + 319777106.

It is an arithmetic number, because the mean of its divisors is an integer number (424983695136).

Almost surely, 2^{21222363202160} is an apocalyptic number.

21222363202160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21222363202160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25499021708160).

21222363202160 is an abundant number, since it is smaller than the sum of its proper divisors (29775680214160).

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

21222363202160 is a wasteful number, since it uses less digits than its factorization.

21222363202160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70607 (or 70570 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 21222363202160 its reverse (6120236322212), we get a palindrome (27342599524372).

The spelling of 21222363202160 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred sixty-three million, two hundred two thousand, one hundred sixty".