2153221040 has 40 divisors (see below), whose sum is σ = 5008169040. Its totient is φ = 860956416.

The previous prime is 2153220959. The next prime is 2153221051. The reversal of 2153221040 is 401223512.

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

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411722 + ... + 416918.

It is an arithmetic number, because the mean of its divisors is an integer number (125204226).

Almost surely, 2^2153221040 is an apocalyptic number.

2153221040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153221040 is an abundant number, since it is smaller than the sum of its proper divisors (2854948000).

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

2153221040 is a wasteful number, since it uses less digits than its factorization.

2153221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389 (or 10383 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2153221040 is about 46402.8128457748. The cubic root of 2153221040 is about 1291.3070981012.

Adding to 2153221040 its reverse (401223512), we get a palindrome (2554444552).

The spelling of 2153221040 in words is "two billion, one hundred fifty-three million, two hundred twenty-one thousand, forty".