10001222440 has 64 divisors (see below), whose sum is σ = 24559848000. Its totient is φ = 3635120640.

The previous prime is 10001222423. The next prime is 10001222447. The reversal of 10001222440 is 4422210001.

It is not an unprimeable number, because it can be changed into a prime (10001222447) 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, 1324596 + ... + 1332124.

It is an arithmetic number, because the mean of its divisors is an integer number (383747625).

Almost surely, 2^10001222440 is an apocalyptic number.

10001222440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001222440 is an abundant number, since it is smaller than the sum of its proper divisors (14558625560).

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

10001222440 is a wasteful number, since it uses less digits than its factorization.

10001222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570 (or 10566 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10001222440 its reverse (4422210001), we get a palindrome (14423432441).

The spelling of 10001222440 in words is "ten billion, one million, two hundred twenty-two thousand, four hundred forty".