1002021153140 has 48 divisors (see below), whose sum is σ = 2405396214144. Its totient is φ = 343472188800.

The previous prime is 1002021153121. The next prime is 1002021153163. The reversal of 1002021153140 is 413511202001.

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

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, 190526 + ... + 1428405.

It is an arithmetic number, because the mean of its divisors is an integer number (50112421128).

Almost surely, 2^{1002021153140} is an apocalyptic number.

1002021153140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002021153140 is an abundant number, since it is smaller than the sum of its proper divisors (1403375061004).

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

1002021153140 is a wasteful number, since it uses less digits than its factorization.

1002021153140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623368 (or 1623366 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1002021153140 its reverse (413511202001), we get a palindrome (1415532355141).

The spelling of 1002021153140 in words is "one trillion, two billion, twenty-one million, one hundred fifty-three thousand, one hundred forty".