201021100001206 has 32 divisors (see below), whose sum is σ = 309653523648000. Its totient is φ = 97815628948800.

The previous prime is 201021100001153. The next prime is 201021100001251. The reversal of 201021100001206 is 602100001120102.

It is a self number, because there is not a number n which added to its sum of digits gives 201021100001206.

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, 84218871 + ... + 86572861.

It is an arithmetic number, because the mean of its divisors is an integer number (9676672614000).

Almost surely, 2^{201021100001206} is an apocalyptic number.

201021100001206 is a deficient number, since it is larger than the sum of its proper divisors (108632423646794).

201021100001206 is a wasteful number, since it uses less digits than its factorization.

201021100001206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356620.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201021100001206 its reverse (602100001120102), we get a palindrome (803121101121308).

The spelling of 201021100001206 in words is "two hundred one trillion, twenty-one billion, one hundred million, one thousand, two hundred six".