121120313313 has 4 divisors (see below), whose sum is σ = 161493751088. Its totient is φ = 80746875540.

The previous prime is 121120313291. The next prime is 121120313351. The reversal of 121120313313 is 313313021121.

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 not a de Polignac number, because 121120313313 - 2¹⁰ = 121120312289 is a prime.

It is a super-3 number, since 3×121120313313³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121120313313.

It is not an unprimeable number, because it can be changed into a prime (121120317313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20186718883 + ... + 20186718888.

It is an arithmetic number, because the mean of its divisors is an integer number (40373437772).

Almost surely, 2^121120313313 is an apocalyptic number.

It is an amenable number.

121120313313 is a deficient number, since it is larger than the sum of its proper divisors (40373437775).

121120313313 is an equidigital number, since it uses as much as digits as its factorization.

121120313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40373437774.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121120313313 its reverse (313313021121), we get a palindrome (434433334434).

The spelling of 121120313313 in words is "one hundred twenty-one billion, one hundred twenty million, three hundred thirteen thousand, three hundred thirteen".