1210121101121 has 8 divisors (see below), whose sum is σ = 1211637262080. Its totient is φ = 1208605421088.

The previous prime is 1210121101103. The next prime is 1210121101151. The reversal of 1210121101121 is 1211011210121.

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

It is a cyclic number.

It is not a de Polignac number, because 1210121101121 - 2³⁸ = 935243194177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210121101096 and 1210121101105.

It is not an unprimeable number, because it can be changed into a prime (1210121101151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5054300 + ... + 5288306.

It is an arithmetic number, because the mean of its divisors is an integer number (151454657760).

Almost surely, 2^{1210121101121} is an apocalyptic number.

It is an amenable number.

1210121101121 is a deficient number, since it is larger than the sum of its proper divisors (1516160959).

1210121101121 is an equidigital number, since it uses as much as digits as its factorization.

1210121101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240463.

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

Adding to 1210121101121 its reverse (1211011210121), we get a palindrome (2421132311242).

The spelling of 1210121101121 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty-one".