1210120111101 has 64 divisors (see below), whose sum is σ = 1818598957056. Its totient is φ = 709393497600.

The previous prime is 1210120111093. The next prime is 1210120111103. The reversal of 1210120111101 is 1011110210121.

It is not a de Polignac number, because 1210120111101 - 2³ = 1210120111093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210120111103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85896280 + ... + 85910366.

It is an arithmetic number, because the mean of its divisors is an integer number (28415608704).

Almost surely, 2^{1210120111101} is an apocalyptic number.

1210120111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210120111101 is a deficient number, since it is larger than the sum of its proper divisors (608478845955).

1210120111101 is a wasteful number, since it uses less digits than its factorization.

1210120111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14682.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1210120111101 its reverse (1011110210121), we get a palindrome (2221230321222).

The spelling of 1210120111101 in words is "one trillion, two hundred ten billion, one hundred twenty million, one hundred eleven thousand, one hundred one".