21110220210001 has 8 divisors (see below), whose sum is σ = 23930614003520. Its totient is φ = 18460759373712.

The previous prime is 21110220209977. The next prime is 21110220210017. The reversal of 21110220210001 is 10001202201112.

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 21110220210001 - 2¹⁷ = 21110220078929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110220210041) 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, 42733239045 + ... + 42733239538.

It is an arithmetic number, because the mean of its divisors is an integer number (2991326750440).

Almost surely, 2^{21110220210001} is an apocalyptic number.

It is an amenable number.

21110220210001 is a deficient number, since it is larger than the sum of its proper divisors (2820393793519).

21110220210001 is a wasteful number, since it uses less digits than its factorization.

21110220210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85466478615.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21110220210001 its reverse (10001202201112), we get a palindrome (31111422411113).

The spelling of 21110220210001 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty million, two hundred ten thousand, one".