1120210121 has 4 divisors (see below), whose sum is σ = 1186104852. Its totient is φ = 1054315392.

The previous prime is 1120210111. The next prime is 1120210127. The reversal of 1120210121 is 1210120211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210120211 = 26647 ⋅45413.

It can be written as a sum of positive squares in 2 ways, for example, as 672676096 + 447534025 = 25936^2 + 21155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120210121 - 2¹⁸ = 1119947977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1120210127) 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, 32947340 + ... + 32947373.

It is an arithmetic number, because the mean of its divisors is an integer number (296526213).

Almost surely, 2^1120210121 is an apocalyptic number.

It is an amenable number.

1120210121 is a deficient number, since it is larger than the sum of its proper divisors (65894731).

1120210121 is an equidigital number, since it uses as much as digits as its factorization.

1120210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65894730.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1120210121 is about 33469.5401970209. The cubic root of 1120210121 is about 1038.5637598839.

Adding to 1120210121 its reverse (1210120211), we get a palindrome (2330330332).

The spelling of 1120210121 in words is "one billion, one hundred twenty million, two hundred ten thousand, one hundred twenty-one".