121021333113 has 8 divisors (see below), whose sum is σ = 163572213088. Its totient is φ = 79575670944.

The previous prime is 121021333057. The next prime is 121021333157. The reversal of 121021333113 is 311333120121.

It is a happy number.

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

It is not a de Polignac number, because 121021333113 - 2¹² = 121021329017 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 121021333113.

It is not an unprimeable number, because it can be changed into a prime (121021333313) 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, 276304195 + ... + 276304632.

It is an arithmetic number, because the mean of its divisors is an integer number (20446526636).

Almost surely, 2^121021333113 is an apocalyptic number.

It is an amenable number.

121021333113 is a deficient number, since it is larger than the sum of its proper divisors (42550879975).

121021333113 is an equidigital number, since it uses as much as digits as its factorization.

121021333113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552608903.

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

Adding to 121021333113 its reverse (311333120121), we get a palindrome (432354453234).

The spelling of 121021333113 in words is "one hundred twenty-one billion, twenty-one million, three hundred thirty-three thousand, one hundred thirteen".