1211110000101 has 24 divisors (see below), whose sum is σ = 1753923749760. Its totient is φ = 805312781856.

The previous prime is 1211110000099. The next prime is 1211110000141. The reversal of 1211110000101 is 1010000111121.

It is not a de Polignac number, because 1211110000101 - 2¹ = 1211110000099 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 (1211110000141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5272435 + ... + 5497343.

It is an arithmetic number, because the mean of its divisors is an integer number (73080156240).

Almost surely, 2^{1211110000101} is an apocalyptic number.

It is an amenable number.

1211110000101 is a deficient number, since it is larger than the sum of its proper divisors (542813749659).

1211110000101 is a wasteful number, since it uses less digits than its factorization.

1211110000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226465 (or 226462 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1211110000101 its reverse (1010000111121), we get a palindrome (2221110111222).

The spelling of 1211110000101 in words is "one trillion, two hundred eleven billion, one hundred ten million, one hundred one", and thus it is an aban number.