21100220210001 has 8 divisors (see below), whose sum is σ = 28133654842944. Its totient is φ = 14066799525200.

The previous prime is 21100220209963. The next prime is 21100220210053. The reversal of 21100220210001 is 10001202200112.

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 21100220210001 - 2³³ = 21091630275409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100220217001) 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, 793351 + ... + 6544451.

It is an arithmetic number, because the mean of its divisors is an integer number (3516706855368).

Almost surely, 2^{21100220210001} is an apocalyptic number.

It is an amenable number.

21100220210001 is a deficient number, since it is larger than the sum of its proper divisors (7033434632943).

21100220210001 is a wasteful number, since it uses less digits than its factorization.

21100220210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974071.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21100220210001 its reverse (10001202200112), we get a palindrome (31101422410113).

The spelling of 21100220210001 in words is "twenty-one trillion, one hundred billion, two hundred twenty million, two hundred ten thousand, one".