201021102101011 has 4 divisors (see below), whose sum is σ = 201235639030552. Its totient is φ = 200806565171472.

The previous prime is 201021102100943. The next prime is 201021102101081. The reversal of 201021102101011 is 110101201120102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201021102101011 - 2²³ = 201021093712403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021102100982 and 201021102101000.

It is not an unprimeable number, because it can be changed into a prime (201021102101081) 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, 107268463365 + ... + 107268465238.

It is an arithmetic number, because the mean of its divisors is an integer number (50308909757638).

Almost surely, 2^{201021102101011} is an apocalyptic number.

201021102101011 is a deficient number, since it is larger than the sum of its proper divisors (214536929541).

201021102101011 is an equidigital number, since it uses as much as digits as its factorization.

201021102101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214536929540.

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

Adding to 201021102101011 its reverse (110101201120102), we get a palindrome (311122303221113).

The spelling of 201021102101011 in words is "two hundred one trillion, twenty-one billion, one hundred two million, one hundred one thousand, eleven".