1020010121 has 16 divisors (see below), whose sum is σ = 1127616000. Its totient is φ = 916774848.

The previous prime is 1020010099. The next prime is 1020010163. The reversal of 1020010121 is 1210100201.

1020010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1020010121 - 2¹⁰ = 1020009097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020010099 and 1020010108.

It is not an unprimeable number, because it can be changed into a prime (1020010171) 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, 117395 + ... + 125783.

It is an arithmetic number, because the mean of its divisors is an integer number (70476000).

Almost surely, 2^1020010121 is an apocalyptic number.

It is an amenable number.

1020010121 is a deficient number, since it is larger than the sum of its proper divisors (107605879).

1020010121 is a wasteful number, since it uses less digits than its factorization.

1020010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8648.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1020010121 is about 31937.5972953508. The cubic root of 1020010121 is about 1006.6260389702.

Adding to 1020010121 its reverse (1210100201), we get a palindrome (2230110322).

The spelling of 1020010121 in words is "one billion, twenty million, ten thousand, one hundred twenty-one".