21010110201019 has 8 divisors (see below), whose sum is σ = 21012595741440. Its totient is φ = 21007624838376.

The previous prime is 21010110201007. The next prime is 21010110201029. The reversal of 21010110201019 is 91010201101012.

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 21010110201019 - 2⁵ = 21010110200987 is a prime.

It is a super-2 number, since 2×21010110201019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010110200987 and 21010110201005.

It is not an unprimeable number, because it can be changed into a prime (21010110201029) 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, 544241772 + ... + 544280374.

It is an arithmetic number, because the mean of its divisors is an integer number (2626574467680).

Almost surely, 2^{21010110201019} is an apocalyptic number.

21010110201019 is a deficient number, since it is larger than the sum of its proper divisors (2485540421).

21010110201019 is a wasteful number, since it uses less digits than its factorization.

21010110201019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88889.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 21010110201019 in words is "twenty-one trillion, ten billion, one hundred ten million, two hundred one thousand, nineteen".