1212110201105 has 24 divisors (see below), whose sum is σ = 1586886175608. Its totient is φ = 887981488128.

The previous prime is 1212110201087. The next prime is 1212110201111. The reversal of 1212110201105 is 5011020112121.

It can be written as a sum of positive squares in 12 ways, for example, as 4467451921 + 1207642749184 = 66839^2 + 1098928^2 .

It is not a de Polignac number, because 1212110201105 - 2⁸ = 1212110200849 is a prime.

It is a super-2 number, since 2×1212110201105² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11282084 + ... + 11389013.

It is an arithmetic number, because the mean of its divisors is an integer number (66120257317).

Almost surely, 2^{1212110201105} is an apocalyptic number.

It is an amenable number.

1212110201105 is a deficient number, since it is larger than the sum of its proper divisors (374775974503).

1212110201105 is a wasteful number, since it uses less digits than its factorization.

1212110201105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22671173 (or 22671156 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1212110201105 its reverse (5011020112121), we get a palindrome (6223130313226).

The spelling of 1212110201105 in words is "one trillion, two hundred twelve billion, one hundred ten million, two hundred one thousand, one hundred five".