21100010210201 has 8 divisors (see below), whose sum is σ = 22724173934280. Its totient is φ = 19476001631232.

The previous prime is 21100010210131. The next prime is 21100010210231. The reversal of 21100010210201 is 10201201000112.

It can be written as a sum of positive squares in 4 ways, for example, as 762399654025 + 20337610556176 = 873155^2 + 4509724^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21100010210201 - 2¹⁴ = 21100010193817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100010210231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38503730 + ... + 39047883.

It is an arithmetic number, because the mean of its divisors is an integer number (2840521741785).

Almost surely, 2^{21100010210201} is an apocalyptic number.

It is an amenable number.

21100010210201 is a deficient number, since it is larger than the sum of its proper divisors (1624163724079).

21100010210201 is a wasteful number, since it uses less digits than its factorization.

21100010210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77572555.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21100010210201 its reverse (10201201000112), we get a palindrome (31301211210313).

The spelling of 21100010210201 in words is "twenty-one trillion, one hundred billion, ten million, two hundred ten thousand, two hundred one".