1002150021500 has 48 divisors (see below), whose sum is σ = 2188932747456. Its totient is φ = 400816584000.

The previous prime is 1002150021451. The next prime is 1002150021503. The reversal of 1002150021500 is 51200512001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002150021503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4726769 + ... + 4934231.

It is an arithmetic number, because the mean of its divisors is an integer number (45602765572).

Almost surely, 2^{1002150021500} is an apocalyptic number.

1002150021500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002150021500 is an abundant number, since it is smaller than the sum of its proper divisors (1186782725956).

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

1002150021500 is a wasteful number, since it uses less digits than its factorization.

1002150021500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217143 (or 217131 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

Adding to 1002150021500 its reverse (51200512001), we get a palindrome (1053350533501).

The spelling of 1002150021500 in words is "one trillion, two billion, one hundred fifty million, twenty-one thousand, five hundred".