201102102021111 has 4 divisors (see below), whose sum is σ = 268136136028152. Its totient is φ = 134068068014072.

The previous prime is 201102102021109. The next prime is 201102102021113. The reversal of 201102102021111 is 111120201201102.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (201102102021109) and next prime (201102102021113).

It is a cyclic number.

It is not a de Polignac number, because 201102102021111 - 2¹ = 201102102021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102102021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33517017003516 + ... + 33517017003521.

It is an arithmetic number, because the mean of its divisors is an integer number (67034034007038).

Almost surely, 2^{201102102021111} is an apocalyptic number.

201102102021111 is a deficient number, since it is larger than the sum of its proper divisors (67034034007041).

201102102021111 is an equidigital number, since it uses as much as digits as its factorization.

201102102021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67034034007040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201102102021111 its reverse (111120201201102), we get a palindrome (312222303222213).

The spelling of 201102102021111 in words is "two hundred one trillion, one hundred two billion, one hundred two million, twenty-one thousand, one hundred eleven".