10021215040 has 56 divisors (see below), whose sum is σ = 23907061152. Its totient is φ = 4001088000.

The previous prime is 10021214921. The next prime is 10021215053. The reversal of 10021215040 is 4051212001.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146415 + ... + 203665.

Almost surely, 2^10021215040 is an apocalyptic number.

10021215040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021215040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11953530576).

10021215040 is an abundant number, since it is smaller than the sum of its proper divisors (13885846112).

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

10021215040 is an equidigital number, since it uses as much as digits as its factorization.

10021215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57815 (or 57805 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 10021215040 its reverse (4051212001), we get a palindrome (14072427041).

The spelling of 10021215040 in words is "ten billion, twenty-one million, two hundred fifteen thousand, forty".