1210111002105 has 16 divisors (see below), whose sum is σ = 1936242572544. Its totient is φ = 645370878080.

The previous prime is 1210111002103. The next prime is 1210111002109. The reversal of 1210111002105 is 5012001110121.

It is not a de Polignac number, because 1210111002105 - 2¹ = 1210111002103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1210111002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 886401 + ... + 1790510.

It is an arithmetic number, because the mean of its divisors is an integer number (121015160784).

Almost surely, 2^{1210111002105} is an apocalyptic number.

1210111002105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1210111002105 is a deficient number, since it is larger than the sum of its proper divisors (726131570439).

1210111002105 is a wasteful number, since it uses less digits than its factorization.

1210111002105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707056.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 1210111002105 its reverse (5012001110121), we get a palindrome (6222112112226).

The spelling of 1210111002105 in words is "one trillion, two hundred ten billion, one hundred eleven million, two thousand, one hundred five".