120101021 has 16 divisors (see below), whose sum is σ = 126403200. Its totient is φ = 114004800.

The previous prime is 120101011. The next prime is 120101053.

120101021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 120101021 - 2¹⁴ = 120084637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343955 + ... + 344303.

It is an arithmetic number, because the mean of its divisors is an integer number (7900200).

Almost surely, 2^120101021 is an apocalyptic number.

It is an amenable number.

120101021 is a deficient number, since it is larger than the sum of its proper divisors (6302179).

120101021 is a wasteful number, since it uses less digits than its factorization.

120101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

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

The square root of 120101021 is about 10959.0611367945. The cubic root of 120101021 is about 493.3807867165.

It can be divided in two parts, 12010 and 1021, that added together give a palindrome (13031).

The spelling of 120101021 in words is "one hundred twenty million, one hundred one thousand, twenty-one".