21000202002102 has 8 divisors (see below), whose sum is σ = 42000404004216. Its totient is φ = 7000067334032.

The previous prime is 21000202002089. The next prime is 21000202002127. The reversal of 21000202002102 is 20120020200012.

It is a sphenic number, since it is the product of 3 distinct primes.

21000202002102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750016833503 + ... + 1750016833514.

It is an arithmetic number, because the mean of its divisors is an integer number (5250050500527).

Almost surely, 2^{21000202002102} is an apocalyptic number.

21000202002102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21000202002102 is a wasteful number, since it uses less digits than its factorization.

21000202002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500033667022.

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

Adding to 21000202002102 its reverse (20120020200012), we get a palindrome (41120222202114).

The spelling of 21000202002102 in words is "twenty-one trillion, two hundred two million, two thousand, one hundred two".