2211402440 has 64 divisors (see below), whose sum is σ = 5363789760. Its totient is φ = 815696640.

The previous prime is 2211402407. The next prime is 2211402451. The reversal of 2211402440 is 442041122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815567 + ... + 818273.

It is an arithmetic number, because the mean of its divisors is an integer number (83809215).

Almost surely, 2^2211402440 is an apocalyptic number.

2211402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211402440 is an abundant number, since it is smaller than the sum of its proper divisors (3152387320).

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

2211402440 is a wasteful number, since it uses less digits than its factorization.

2211402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302 (or 4298 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2211402440 is about 47025.5509271290. The cubic root of 2211402440 is about 1302.8345330126.

Adding to 2211402440 its reverse (442041122), we get a palindrome (2653443562).

The spelling of 2211402440 in words is "two billion, two hundred eleven million, four hundred two thousand, four hundred forty".