2011212101 has 8 divisors (see below), whose sum is σ = 2044555200. Its totient is φ = 1978008480.

The previous prime is 2011212067. The next prime is 2011212107. The reversal of 2011212101 is 1012121102.

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 2011212101 - 2²² = 2007017797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011212107) 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, 5591 + ... + 63668.

It is an arithmetic number, because the mean of its divisors is an integer number (255569400).

Almost surely, 2^2011212101 is an apocalyptic number.

It is an amenable number.

2011212101 is a deficient number, since it is larger than the sum of its proper divisors (33343099).

2011212101 is an equidigital number, since it uses as much as digits as its factorization.

2011212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69739.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2011212101 is about 44846.5394540092. The cubic root of 2011212101 is about 1262.2710576070.

Adding to 2011212101 its reverse (1012121102), we get a palindrome (3023333203).

Subtracting from 2011212101 its reverse (1012121102), we obtain a palindrome (999090999).

The spelling of 2011212101 in words is "two billion, eleven million, two hundred twelve thousand, one hundred one".