120021011 has 8 divisors (see below), whose sum is σ = 131024304. Its totient is φ = 109033120.

The previous prime is 120020993. The next prime is 120021017. The reversal of 120021011 is 110120021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120021011 - 2⁶ = 120020947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120021011.

It is not an unprimeable number, because it can be changed into a prime (120021017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17741 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (16378038).

Almost surely, 2^120021011 is an apocalyptic number.

120021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120021011 is a deficient number, since it is larger than the sum of its proper divisors (11003293).

120021011 is a wasteful number, since it uses less digits than its factorization.

120021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701.

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

The square root of 120021011 is about 10955.4101246827. The cubic root of 120021011 is about 493.2712007316.

Adding to 120021011 its reverse (110120021), we get a palindrome (230141032).

The spelling of 120021011 in words is "one hundred twenty million, twenty-one thousand, eleven".