22213121334440 has 32 divisors (see below), whose sum is σ = 51141837494880. Its totient is φ = 8678614846272.

The previous prime is 22213121334433. The next prime is 22213121334491. The reversal of 22213121334440 is 4443312131222.

It is a happy number.

It is a super-2 number, since 2×22213121334440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22213121334397 and 22213121334406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6457300994 + ... + 6457304433.

It is an arithmetic number, because the mean of its divisors is an integer number (1598182421715).

Almost surely, 2^{22213121334440} is an apocalyptic number.

22213121334440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22213121334440 is an abundant number, since it is smaller than the sum of its proper divisors (28928716160440).

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

22213121334440 is a wasteful number, since it uses less digits than its factorization.

22213121334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914605481 (or 12914605477 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 22213121334440 its reverse (4443312131222), we get a palindrome (26656433465662).

The spelling of 22213121334440 in words is "twenty-two trillion, two hundred thirteen billion, one hundred twenty-one million, three hundred thirty-four thousand, four hundred forty".