21001002101202 has 8 divisors (see below), whose sum is σ = 42002004202416. Its totient is φ = 7000334033732.

The previous prime is 21001002101153. The next prime is 21001002101251. The reversal of 21001002101202 is 20210120010012.

It is an interprime number because it is at equal distance from previous prime (21001002101153) and next prime (21001002101251).

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

21001002101202 is an admirable 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, 1750083508428 + ... + 1750083508439.

It is an arithmetic number, because the mean of its divisors is an integer number (5250250525302).

Almost surely, 2^{21001002101202} is an apocalyptic number.

21001002101202 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.

21001002101202 is a wasteful number, since it uses less digits than its factorization.

21001002101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500167016872.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21001002101202 its reverse (20210120010012), we get a palindrome (41211122111214).

The spelling of 21001002101202 in words is "twenty-one trillion, one billion, two million, one hundred one thousand, two hundred two".