201010210101091 has 8 divisors (see below), whose sum is σ = 202369847922000. Its totient is φ = 199650713293920.

The previous prime is 201010210101089. The next prime is 201010210101101. The reversal of 201010210101091 is 190101012010102.

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 201010210101091 - 2¹ = 201010210101089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201010210131091) 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, 32392080 + ... + 38095501.

It is an arithmetic number, because the mean of its divisors is an integer number (25296230990250).

Almost surely, 2^{201010210101091} is an apocalyptic number.

201010210101091 is a deficient number, since it is larger than the sum of its proper divisors (1359637820909).

201010210101091 is a wasteful number, since it uses less digits than its factorization.

201010210101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70506869.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 201010210101091 its reverse (190101012010102), we get a palindrome (391111222111193).

The spelling of 201010210101091 in words is "two hundred one trillion, ten billion, two hundred ten million, one hundred one thousand, ninety-one".