21001012010202 has 32 divisors (see below), whose sum is σ = 49657565347200. Its totient is φ = 5793382623168.

The previous prime is 21001012010119. The next prime is 21001012010227. The reversal of 21001012010202 is 20201021010012.

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, 8621103877 + ... + 8621106312.

It is an arithmetic number, because the mean of its divisors is an integer number (1551798917100).

Almost surely, 2^{21001012010202} is an apocalyptic number.

21001012010202 is an abundant number, since it is smaller than the sum of its proper divisors (28656553336998).

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

21001012010202 is a wasteful number, since it uses less digits than its factorization.

21001012010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242210230.

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

Adding to 21001012010202 its reverse (20201021010012), we get a palindrome (41202033020214).

The spelling of 21001012010202 in words is "twenty-one trillion, one billion, twelve million, ten thousand, two hundred two".