2211223440 has 40 divisors (see below), whose sum is σ = 6854793408. Its totient is φ = 589659520.

The previous prime is 2211223433. The next prime is 2211223447. The reversal of 2211223440 is 443221122.

It is an interprime number because it is at equal distance from previous prime (2211223433) and next prime (2211223447).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2211223447) 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, 4606476 + ... + 4606955.

Almost surely, 2^2211223440 is an apocalyptic number.

2211223440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211223440 is an abundant number, since it is smaller than the sum of its proper divisors (4643569968).

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

2211223440 is a wasteful number, since it uses less digits than its factorization.

2211223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9213447 (or 9213441 counting only the distinct ones).

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

The square root of 2211223440 is about 47023.6476679553. The cubic root of 2211223440 is about 1302.7993798040.

Adding to 2211223440 its reverse (443221122), we get a palindrome (2654444562).

The spelling of 2211223440 in words is "two billion, two hundred eleven million, two hundred twenty-three thousand, four hundred forty".