1121201200121 has 8 divisors (see below), whose sum is σ = 1159890622920. Its totient is φ = 1082513598208.

The previous prime is 1121201200087. The next prime is 1121201200151. The reversal of 1121201200121 is 1210021021211.

It can be written as a sum of positive squares in 4 ways, for example, as 475486098025 + 645715102096 = 689555^2 + 803564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121201200121 is a prime.

It is a super-3 number, since 3×1121201200121³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121201200096 and 1121201200105.

It is not an unprimeable number, because it can be changed into a prime (1121201200151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862175 + ... + 1727931.

It is an arithmetic number, because the mean of its divisors is an integer number (144986327865).

Almost surely, 2^{1121201200121} is an apocalyptic number.

It is an amenable number.

1121201200121 is a deficient number, since it is larger than the sum of its proper divisors (38689422799).

1121201200121 is an equidigital number, since it uses as much as digits as its factorization.

1121201200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910443.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121201200121 its reverse (1210021021211), we get a palindrome (2331222221332).

The spelling of 1121201200121 in words is "one trillion, one hundred twenty-one billion, two hundred one million, two hundred thousand, one hundred twenty-one".