102002102021000 has 64 divisors (see below), whose sum is σ = 240149243767680. Its totient is φ = 40550528836800.

The previous prime is 102002102020853. The next prime is 102002102021003. The reversal of 102002102021000 is 120201200201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102002102021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312726884 + ... + 313052883.

It is an arithmetic number, because the mean of its divisors is an integer number (3752331933870).

Almost surely, 2^{102002102021000} is an apocalyptic number.

102002102021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102002102021000 is an abundant number, since it is smaller than the sum of its proper divisors (138147141746680).

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

102002102021000 is a wasteful number, since it uses less digits than its factorization.

102002102021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625779951 (or 625779937 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102002102021000 its reverse (120201200201), we get a palindrome (102122303221201).

The spelling of 102002102021000 in words is "one hundred two trillion, two billion, one hundred two million, twenty-one thousand".