201210102020091 has 32 divisors (see below), whose sum is σ = 298757128439808. Its totient is φ = 119871687237120.

The previous prime is 201210102020033. The next prime is 201210102020141. The reversal of 201210102020091 is 190020201012102.

It is not a de Polignac number, because 201210102020091 - 2¹³ = 201210102011899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201210102020591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1200554101 + ... + 1200721686.

It is an arithmetic number, because the mean of its divisors is an integer number (9336160263744).

Almost surely, 2^{201210102020091} is an apocalyptic number.

201210102020091 is a deficient number, since it is larger than the sum of its proper divisors (97547026419717).

201210102020091 is a wasteful number, since it uses less digits than its factorization.

201210102020091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401275891.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 201210102020091 its reverse (190020201012102), we get a palindrome (391230303032193).

The spelling of 201210102020091 in words is "two hundred one trillion, two hundred ten billion, one hundred two million, twenty thousand, ninety-one".