1213331100121 has 8 divisors (see below), whose sum is σ = 1394325243584. Its totient is φ = 1034252238960.

The previous prime is 1213331100097. The next prime is 1213331100131. The reversal of 1213331100121 is 1210011333121.

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 1213331100121 - 2¹⁵ = 1213331067353 is a prime.

It is a super-2 number, since 2×1213331100121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213331100131) 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, 478819215 + ... + 478821748.

It is an arithmetic number, because the mean of its divisors is an integer number (174290655448).

Almost surely, 2^{1213331100121} is an apocalyptic number.

It is an amenable number.

1213331100121 is a deficient number, since it is larger than the sum of its proper divisors (180994143463).

1213331100121 is an equidigital number, since it uses as much as digits as its factorization.

1213331100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957641151.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1213331100121 its reverse (1210011333121), we get a palindrome (2423342433242).

The spelling of 1213331100121 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, one hundred thousand, one hundred twenty-one".