121001221313 has 8 divisors (see below), whose sum is σ = 141503089728. Its totient is φ = 101303347824.

The previous prime is 121001221301. The next prime is 121001221331. The reversal of 121001221313 is 313122100121.

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

It is not a de Polignac number, because 121001221313 - 2²⁰ = 121000172737 is a prime.

It is a super-3 number, since 3×121001221313³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121001221291 and 121001221300.

It is not an unprimeable number, because it can be changed into a prime (121001221333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200998406 + ... + 200999007.

It is an arithmetic number, because the mean of its divisors is an integer number (17687886216).

Almost surely, 2^121001221313 is an apocalyptic number.

It is an amenable number.

121001221313 is a deficient number, since it is larger than the sum of its proper divisors (20501868415).

121001221313 is an equidigital number, since it uses as much as digits as its factorization.

121001221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401997463.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121001221313 its reverse (313122100121), we get a palindrome (434123321434).

The spelling of 121001221313 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, three hundred thirteen".