201110210021 has 8 divisors (see below), whose sum is σ = 230032906944. Its totient is φ = 172235679840.

The previous prime is 201110210017. The next prime is 201110210083. The reversal of 201110210021 is 120012011102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201110210021 - 2² = 201110210017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110209984 and 201110210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110210921) 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, 12032735 + ... + 12049436.

It is an arithmetic number, because the mean of its divisors is an integer number (28754113368).

Almost surely, 2^201110210021 is an apocalyptic number.

It is an amenable number.

201110210021 is a deficient number, since it is larger than the sum of its proper divisors (28922696923).

201110210021 is a wasteful number, since it uses less digits than its factorization.

201110210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24083371.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201110210021 its reverse (120012011102), we get a palindrome (321122221123).

The spelling of 201110210021 in words is "two hundred one billion, one hundred ten million, two hundred ten thousand, twenty-one".