21111010210201 has 8 divisors (see below), whose sum is σ = 21409296642144. Its totient is φ = 20814593913120.

The previous prime is 21111010210183. The next prime is 21111010210259. The reversal of 21111010210201 is 10201201011112.

It is a happy number.

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 21111010210201 - 2³³ = 21102420275609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21111010210291) 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, 467510980 + ... + 467556133.

It is an arithmetic number, because the mean of its divisors is an integer number (2676162080268).

Almost surely, 2^{21111010210201} is an apocalyptic number.

It is an amenable number.

21111010210201 is a deficient number, since it is larger than the sum of its proper divisors (298286431943).

21111010210201 is a wasteful number, since it uses less digits than its factorization.

21111010210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935067431.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21111010210201 its reverse (10201201011112), we get a palindrome (31312211221313).

The spelling of 21111010210201 in words is "twenty-one trillion, one hundred eleven billion, ten million, two hundred ten thousand, two hundred one".