201101102011021 has 4 divisors (see below), whose sum is σ = 201101503502944. Its totient is φ = 201100700519100.

The previous prime is 201101102010983. The next prime is 201101102011027. The reversal of 201101102011021 is 120110201101102.

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 201101102011021 - 2²⁹ = 201100565140109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201101102010992 and 201101102011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101102011027) 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, 199993695 + ... + 200996716.

It is an arithmetic number, because the mean of its divisors is an integer number (50275375875736).

Almost surely, 2^{201101102011021} is an apocalyptic number.

It is an amenable number.

201101102011021 is a deficient number, since it is larger than the sum of its proper divisors (401491923).

201101102011021 is an equidigital number, since it uses as much as digits as its factorization.

201101102011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401491922.

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

Adding to 201101102011021 its reverse (120110201101102), we get a palindrome (321211303112123).

The spelling of 201101102011021 in words is "two hundred one trillion, one hundred one billion, one hundred two million, eleven thousand, twenty-one".