10222231440 has 80 divisors (see below), whose sum is σ = 32226062400. Its totient is φ = 2679722496.

The previous prime is 10222231433. The next prime is 10222231441. The reversal of 10222231440 is 4413222201.

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

It is a super-2 number, since 2×10222231440² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10222231441) 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, 346795 + ... + 375114.

It is an arithmetic number, because the mean of its divisors is an integer number (402825780).

Almost surely, 2^10222231440 is an apocalyptic number.

10222231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10222231440 is an abundant number, since it is smaller than the sum of its proper divisors (22003830960).

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

10222231440 is a wasteful number, since it uses less digits than its factorization.

10222231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721984 (or 721978 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 10222231440 its reverse (4413222201), we get a palindrome (14635453641).

The spelling of 10222231440 in words is "ten billion, two hundred twenty-two million, two hundred thirty-one thousand, four hundred forty".