10522215440 has 80 divisors (see below), whose sum is σ = 27009896256. Its totient is φ = 3780134400.

The previous prime is 10522215439. The next prime is 10522215449. The reversal of 10522215440 is 4451222501.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×10522215440² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10522215449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010 + ... + 145070.

Almost surely, 2^10522215440 is an apocalyptic number.

10522215440 is a gapful number since it is divisible by the number (10) 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 10522215440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13504948128).

10522215440 is an abundant number, since it is smaller than the sum of its proper divisors (16487680816).

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

10522215440 is a wasteful number, since it uses less digits than its factorization.

10522215440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144168 (or 144162 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 10522215440 its reverse (4451222501), we get a palindrome (14973437941).

The spelling of 10522215440 in words is "ten billion, five hundred twenty-two million, two hundred fifteen thousand, four hundred forty".