121011021318 has 32 divisors (see below), whose sum is σ = 277920051840. Its totient is φ = 34740005760.

The previous prime is 121011021317. The next prime is 121011021367. The reversal of 121011021318 is 813120110121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121011021294 and 121011021303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011021317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48248755 + ... + 48251262.

It is an arithmetic number, because the mean of its divisors is an integer number (8685001620).

Almost surely, 2^121011021318 is an apocalyptic number.

121011021318 is an abundant number, since it is smaller than the sum of its proper divisors (156909030522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121011021318 is a wasteful number, since it uses less digits than its factorization.

121011021318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96500052.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 121011021318 its reverse (813120110121), we get a palindrome (934131131439).

The spelling of 121011021318 in words is "one hundred twenty-one billion, eleven million, twenty-one thousand, three hundred eighteen".