201201110021 has 8 divisors (see below), whose sum is σ = 216036984384. Its totient is φ = 186698626240.

The previous prime is 201201109979. The next prime is 201201110041. The reversal of 201201110021 is 120011102102.

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 201201110021 - 2¹⁸ = 201200847877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201201109984 and 201201110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201110041) 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, 83346395 + ... + 83348808.

It is an arithmetic number, because the mean of its divisors is an integer number (27004623048).

Almost surely, 2^201201110021 is an apocalyptic number.

It is an amenable number.

201201110021 is a deficient number, since it is larger than the sum of its proper divisors (14835874363).

201201110021 is a wasteful number, since it uses less digits than its factorization.

201201110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166695291.

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

Adding to 201201110021 its reverse (120011102102), we get a palindrome (321212212123).

The spelling of 201201110021 in words is "two hundred one billion, two hundred one million, one hundred ten thousand, twenty-one".