201110110221021 has 8 divisors (see below), whose sum is σ = 268150065680640. Its totient is φ = 134071780787712.

The previous prime is 201110110220969. The next prime is 201110110221029. The reversal of 201110110221021 is 120122011011102.

It is a happy number.

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

It is not a de Polignac number, because 201110110221021 - 2¹⁷ = 201110110089949 is a prime.

It is a super-2 number, since 2×201110110221021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110110221029) 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, 406217956 + ... + 406712733.

It is an arithmetic number, because the mean of its divisors is an integer number (33518758210080).

Almost surely, 2^{201110110221021} is an apocalyptic number.

It is an amenable number.

201110110221021 is a deficient number, since it is larger than the sum of its proper divisors (67039955459619).

201110110221021 is an equidigital number, since it uses as much as digits as its factorization.

201110110221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813013155.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201110110221021 its reverse (120122011011102), we get a palindrome (321232121232123).

The spelling of 201110110221021 in words is "two hundred one trillion, one hundred ten billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".