21101021102201 has 8 divisors (see below), whose sum is σ = 21862672070400. Its totient is φ = 20344430938320.

The previous prime is 21101021102179. The next prime is 21101021102233. The reversal of 21101021102201 is 10220112010112.

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 21101021102201 - 2¹⁰ = 21101021101177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101021108201) 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, 1265192591 + ... + 1265209268.

It is an arithmetic number, because the mean of its divisors is an integer number (2732834008800).

Almost surely, 2^{21101021102201} is an apocalyptic number.

It is an amenable number.

21101021102201 is a deficient number, since it is larger than the sum of its proper divisors (761650968199).

21101021102201 is a wasteful number, since it uses less digits than its factorization.

21101021102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530402159.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21101021102201 its reverse (10220112010112), we get a palindrome (31321133112313).

The spelling of 21101021102201 in words is "twenty-one trillion, one hundred one billion, twenty-one million, one hundred two thousand, two hundred one".