22142403321220 has 192 divisors, whose sum is σ = 59179706804736. Its totient is φ = 6772863651840.

The previous prime is 22142403321211. The next prime is 22142403321229. The reversal of 22142403321220 is 2212330424122.

It is an interprime number because it is at equal distance from previous prime (22142403321211) and next prime (22142403321229).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (22142403321229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4749760 + ... + 8175880.

It is an arithmetic number, because the mean of its divisors is an integer number (308227639608).

Almost surely, 2^{22142403321220} is an apocalyptic number.

22142403321220 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 22142403321220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29589853402368).

22142403321220 is an abundant number, since it is smaller than the sum of its proper divisors (37037303483516).

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

22142403321220 is a wasteful number, since it uses less digits than its factorization.

22142403321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426270 (or 3426268 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 22142403321220 its reverse (2212330424122), we get a palindrome (24354733745342).

The spelling of 22142403321220 in words is "twenty-two trillion, one hundred forty-two billion, four hundred three million, three hundred twenty-one thousand, two hundred twenty".