10121221024 has 24 divisors (see below), whose sum is σ = 20792509920. Its totient is φ = 4840583616.

The previous prime is 10121221013. The next prime is 10121221049. The reversal of 10121221024 is 42012212101.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 10121220989 and 10121221007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6875094 + ... + 6876565.

It is an arithmetic number, because the mean of its divisors is an integer number (866354580).

Almost surely, 2^10121221024 is an apocalyptic number.

It is an amenable number.

10121221024 is an abundant number, since it is smaller than the sum of its proper divisors (10671288896).

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

10121221024 is a wasteful number, since it uses less digits than its factorization.

10121221024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13751692 (or 13751684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10121221024 its reverse (42012212101), we get a palindrome (52133433125).

The spelling of 10121221024 in words is "ten billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-four".