1210302121121 has 4 divisors (see below), whose sum is σ = 1228366331952. Its totient is φ = 1192237910292.

The previous prime is 1210302121109. The next prime is 1210302121169. The reversal of 1210302121121 is 1211212030121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1210302121121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210302121121.

It is not an unprimeable number, because it can be changed into a prime (1210302121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9032105315 + ... + 9032105448.

It is an arithmetic number, because the mean of its divisors is an integer number (307091582988).

Almost surely, 2^{1210302121121} is an apocalyptic number.

It is an amenable number.

1210302121121 is a deficient number, since it is larger than the sum of its proper divisors (18064210831).

1210302121121 is an equidigital number, since it uses as much as digits as its factorization.

1210302121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18064210830.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1210302121121 its reverse (1211212030121), we get a palindrome (2421514151242).

The spelling of 1210302121121 in words is "one trillion, two hundred ten billion, three hundred two million, one hundred twenty-one thousand, one hundred twenty-one".