201101121021001 has 4 divisors (see below), whose sum is σ = 201274036861392. Its totient is φ = 200928205180612.

The previous prime is 201101121020957. The next prime is 201101121021019. The reversal of 201101121021001 is 100120121101102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201101121021001 - 2¹¹ = 201101121018953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201101121022001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86457918451 + ... + 86457920776.

It is an arithmetic number, because the mean of its divisors is an integer number (50318509215348).

Almost surely, 2^{201101121021001} is an apocalyptic number.

It is an amenable number.

201101121021001 is a deficient number, since it is larger than the sum of its proper divisors (172915840391).

201101121021001 is a wasteful number, since it uses less digits than its factorization.

201101121021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172915840390.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201101121021001 its reverse (100120121101102), we get a palindrome (301221242122103).

The spelling of 201101121021001 in words is "two hundred one trillion, one hundred one billion, one hundred twenty-one million, twenty-one thousand, one".