22215541421346 has 96 divisors (see below), whose sum is σ = 55669761141120. Its totient is φ = 5858112927744.

The previous prime is 22215541421323. The next prime is 22215541421347. The reversal of 22215541421346 is 64312414551222.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 22215541421298 and 22215541421307.

It is not an unprimeable number, because it can be changed into a prime (22215541421347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23761395 + ... + 24678633.

It is an arithmetic number, because the mean of its divisors is an integer number (579893345220).

Almost surely, 2^{22215541421346} is an apocalyptic number.

22215541421346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22215541421346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27834880570560).

22215541421346 is an abundant number, since it is smaller than the sum of its proper divisors (33454219719774).

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

22215541421346 is a wasteful number, since it uses less digits than its factorization.

22215541421346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923608 (or 923601 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

Adding to 22215541421346 its reverse (64312414551222), we get a palindrome (86527955972568).

The spelling of 22215541421346 in words is "twenty-two trillion, two hundred fifteen billion, five hundred forty-one million, four hundred twenty-one thousand, three hundred forty-six".