10101212120111 has 16 divisors (see below), whose sum is σ = 12215830330368. Its totient is φ = 8165094907200.

The previous prime is 10101212120081. The next prime is 10101212120113. The reversal of 10101212120111 is 11102121210101.

It is a de Polignac number, because none of the positive numbers 2^k-10101212120111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101212120113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441822710 + ... + 441845571.

It is an arithmetic number, because the mean of its divisors is an integer number (763489395648).

Almost surely, 2^{10101212120111} is an apocalyptic number.

10101212120111 is a deficient number, since it is larger than the sum of its proper divisors (2114618210257).

10101212120111 is an equidigital number, since it uses as much as digits as its factorization.

10101212120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883668382.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10101212120111 its reverse (11102121210101), we get a palindrome (21203333330212).

The spelling of 10101212120111 in words is "ten trillion, one hundred one billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".