201110102212021 has 8 divisors (see below), whose sum is σ = 201227797067544. Its totient is φ = 200992409863680.

The previous prime is 201110102212013. The next prime is 201110102212067. The reversal of 201110102212021 is 120212201011102.

It can be written as a sum of positive squares in 4 ways, for example, as 32971551631396 + 168138550580625 = 5742086^2 + 12966825^2 .

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 201110102212021 - 2³ = 201110102212013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110102211986 and 201110102212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110102212001) 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, 174069165 + ... + 175220701.

It is an arithmetic number, because the mean of its divisors is an integer number (25153474633443).

Almost surely, 2^{201110102212021} is an apocalyptic number.

It is an amenable number.

201110102212021 is a deficient number, since it is larger than the sum of its proper divisors (117694855523).

201110102212021 is a wasteful number, since it uses less digits than its factorization.

201110102212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253591.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201110102212021 its reverse (120212201011102), we get a palindrome (321322303223123).

The spelling of 201110102212021 in words is "two hundred one trillion, one hundred ten billion, one hundred two million, two hundred twelve thousand, twenty-one".