1121210110121 has 4 divisors (see below), whose sum is σ = 1122616899012. Its totient is φ = 1119803321232.

The previous prime is 1121210110117. The next prime is 1121210110127. The reversal of 1121210110121 is 1210110121211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 507565054096 + 613645056025 = 712436^2 + 783355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121210110121 - 2² = 1121210110117 is a prime.

It is a super-2 number, since 2×1121210110121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121210110096 and 1121210110105.

It is not an unprimeable number, because it can be changed into a prime (1121210110127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703393250 + ... + 703394843.

It is an arithmetic number, because the mean of its divisors is an integer number (280654224753).

Almost surely, 2^{1121210110121} is an apocalyptic number.

It is an amenable number.

1121210110121 is a deficient number, since it is larger than the sum of its proper divisors (1406788891).

1121210110121 is an equidigital number, since it uses as much as digits as its factorization.

1121210110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406788890.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121210110121 its reverse (1210110121211), we get a palindrome (2331320231332).

The spelling of 1121210110121 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred twenty-one".