121023420512 has 96 divisors (see below), whose sum is σ = 254242455264. Its totient is φ = 56510668800.

The previous prime is 121023420467. The next prime is 121023420523. The reversal of 121023420512 is 215024320121.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 65030462 + ... + 65032322.

It is an arithmetic number, because the mean of its divisors is an integer number (2648358909).

Almost surely, 2^121023420512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121023420512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127121227632).

121023420512 is an abundant number, since it is smaller than the sum of its proper divisors (133219034752).

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

121023420512 is a wasteful number, since it uses less digits than its factorization.

121023420512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 121023420512 its reverse (215024320121), we get a palindrome (336047740633).

The spelling of 121023420512 in words is "one hundred twenty-one billion, twenty-three million, four hundred twenty thousand, five hundred twelve".