1242121030211 has 8 divisors (see below), whose sum is σ = 1262302490064. Its totient is φ = 1222063764480.

The previous prime is 1242121030181. The next prime is 1242121030217. The reversal of 1242121030211 is 1120301212421.

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 1242121030211 - 2²⁶ = 1242053921347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242121030217) 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 7 ways as a sum of consecutive naturals, for example, 31028366 + ... + 31068371.

It is an arithmetic number, because the mean of its divisors is an integer number (157787811258).

Almost surely, 2^{1242121030211} is an apocalyptic number.

1242121030211 is a deficient number, since it is larger than the sum of its proper divisors (20181459853).

1242121030211 is an equidigital number, since it uses as much as digits as its factorization.

1242121030211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62097061.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1242121030211 its reverse (1120301212421), we get a palindrome (2362422242632).

The spelling of 1242121030211 in words is "one trillion, two hundred forty-two billion, one hundred twenty-one million, thirty thousand, two hundred eleven".