10101212011111 has 16 divisors (see below), whose sum is σ = 10953552939840. Its totient is φ = 9259853241600.

The previous prime is 10101212011103. The next prime is 10101212011139. The reversal of 10101212011111 is 11111021210101.

It is not a de Polignac number, because 10101212011111 - 2³ = 10101212011103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101212011091 and 10101212011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101212018111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3519715 + ... + 5708836.

It is an arithmetic number, because the mean of its divisors is an integer number (684597058740).

Almost surely, 2^{10101212011111} is an apocalyptic number.

10101212011111 is a deficient number, since it is larger than the sum of its proper divisors (852340928729).

10101212011111 is a wasteful number, since it uses less digits than its factorization.

10101212011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9229146.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10101212011111 its reverse (11111021210101), we get a palindrome (21212233221212).

The spelling of 10101212011111 in words is "ten trillion, one hundred one billion, two hundred twelve million, eleven thousand, one hundred eleven".