10101010111211 has 4 divisors (see below), whose sum is σ = 10101039761112. Its totient is φ = 10100980461312.

The previous prime is 10101010111187. The next prime is 10101010111219. The reversal of 10101010111211 is 11211101010101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10101010111211 - 2²² = 10101005916907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101010111192 and 10101010111201.

It is not an unprimeable number, because it can be changed into a prime (10101010111219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14307926 + ... + 14997291.

It is an arithmetic number, because the mean of its divisors is an integer number (2525259940278).

Almost surely, 2^{10101010111211} is an apocalyptic number.

10101010111211 is a deficient number, since it is larger than the sum of its proper divisors (29649901).

10101010111211 is an equidigital number, since it uses as much as digits as its factorization.

10101010111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29649900.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 10101010111211 its reverse (11211101010101), we get a palindrome (21312111121312).

It can be divided in two parts, 101010101 and 11211, that multiplied together give a palindrome (1132424242311).

The spelling of 10101010111211 in words is "ten trillion, one hundred one billion, ten million, one hundred eleven thousand, two hundred eleven".