1210115621121 has 32 divisors (see below), whose sum is σ = 1801353945600. Its totient is φ = 716247436800.

The previous prime is 1210115621107. The next prime is 1210115621123. The reversal of 1210115621121 is 1211265110121.

It is not a de Polignac number, because 1210115621121 - 2¹¹ = 1210115619073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210115621091 and 1210115621100.

It is not an unprimeable number, because it can be changed into a prime (1210115621123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10798186 + ... + 10909676.

It is an arithmetic number, because the mean of its divisors is an integer number (56292310800).

Almost surely, 2^{1210115621121} is an apocalyptic number.

1210115621121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210115621121 is a deficient number, since it is larger than the sum of its proper divisors (591238324479).

1210115621121 is a wasteful number, since it uses less digits than its factorization.

1210115621121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119197.

The product of its (nonzero) digits is 240, while the sum is 24.

The spelling of 1210115621121 in words is "one trillion, two hundred ten billion, one hundred fifteen million, six hundred twenty-one thousand, one hundred twenty-one".