21440230011222 has 16 divisors (see below), whose sum is σ = 46778683660992. Its totient is φ = 6497039397320.

The previous prime is 21440230011197. The next prime is 21440230011229. The reversal of 21440230011222 is 22211003204412.

It is a junction number, because it is equal to n+sod(n) for n = 21440230011192 and 21440230011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21440230011229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162425984868 + ... + 162425984999.

It is an arithmetic number, because the mean of its divisors is an integer number (2923667728812).

Almost surely, 2^{21440230011222} is an apocalyptic number.

21440230011222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21440230011222 is an abundant number, since it is smaller than the sum of its proper divisors (25338453649770).

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

21440230011222 is a wasteful number, since it uses less digits than its factorization.

21440230011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324851969883.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21440230011222 its reverse (22211003204412), we get a palindrome (43651233215634).

The spelling of 21440230011222 in words is "twenty-one trillion, four hundred forty billion, two hundred thirty million, eleven thousand, two hundred twenty-two".