201010111221 has 8 divisors (see below), whose sum is σ = 270667080864. Its totient is φ = 132679941200.

The previous prime is 201010111177. The next prime is 201010111259. The reversal of 201010111221 is 122111010102.

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 201010111221 - 2⁶ = 201010111157 is a prime.

It is a super-2 number, since 2×201010111221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201010111197 and 201010111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010111271) 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, 331699551 + ... + 331700156.

It is an arithmetic number, because the mean of its divisors is an integer number (33833385108).

Almost surely, 2^201010111221 is an apocalyptic number.

It is an amenable number.

201010111221 is a deficient number, since it is larger than the sum of its proper divisors (69656969643).

201010111221 is a wasteful number, since it uses less digits than its factorization.

201010111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663399811.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201010111221 its reverse (122111010102), we get a palindrome (323121121323).

The spelling of 201010111221 in words is "two hundred one billion, ten million, one hundred eleven thousand, two hundred twenty-one".