10021200240 has 80 divisors (see below), whose sum is σ = 31213109376. Its totient is φ = 2659641600.

The previous prime is 10021200227. The next prime is 10021200281. The reversal of 10021200240 is 4200212001.

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

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 48306 + ... + 149585.

Almost surely, 2^10021200240 is an apocalyptic number.

10021200240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021200240 is an abundant number, since it is smaller than the sum of its proper divisors (21191909136).

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

10021200240 is a wasteful number, since it uses less digits than its factorization.

10021200240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198118 (or 198112 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 10021200240 its reverse (4200212001), we get a palindrome (14221412241).

The spelling of 10021200240 in words is "ten billion, twenty-one million, two hundred thousand, two hundred forty".