2011210101 has 16 divisors (see below), whose sum is σ = 3015472320.
Its totient is φ = 1324650960.
The previous prime is 2011210093. The next prime is 2011210129. The reversal of 2011210101 is 1010121102.
It is a happy number.
It is not a de Polignac number, because 2011210101 - 23 = 2011210093 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2011210151) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446490 + ... + 450971.
It is an arithmetic number, because the mean of its divisors is an integer number (188467020).
Almost surely, 22011210101 is an apocalyptic number.
It is an amenable number.
2011210101 is a deficient number, since it is larger than the sum of its proper divisors (1004262219).
2011210101 is an equidigital number, since it uses as much as digits as its factorization.
2011210101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 897553 (or 897547 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The square root of 2011210101 is about 44846.5171557391.
The cubic root of 2011210101 is about 1262.2706391955.
Adding to 2011210101 its reverse (1010121102), we get a palindrome (3021331203).
The spelling of 2011210101 in words is "two billion, eleven million, two hundred ten thousand, one hundred one".