120011021 has 8 divisors (see below), whose sum is σ = 129901464. Its totient is φ = 110214720.

The previous prime is 120011009. The next prime is 120011039. The reversal of 120011021 is 120110021.

It can be written as a sum of positive squares in 4 ways, for example, as 23872996 + 96138025 = 4886^2 + 9805^2 .

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 120011021 - 2²² = 115816717 is a prime.

It is a super-2 number, since 2×120011021² = 28805290322924882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011321) 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, 20870 + ... + 25991.

It is an arithmetic number, because the mean of its divisors is an integer number (16237683).

Almost surely, 2^120011021 is an apocalyptic number.

It is an amenable number.

120011021 is a deficient number, since it is larger than the sum of its proper divisors (9890443).

120011021 is a wasteful number, since it uses less digits than its factorization.

120011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47071.

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

The square root of 120011021 is about 10954.9541760794. The cubic root of 120011021 is about 493.2575144723.

Adding to 120011021 its reverse (120110021), we get a palindrome (240121042).

It can be divided in two parts, 1200 and 11021, that added together give a palindrome (12221).

The spelling of 120011021 in words is "one hundred twenty million, eleven thousand, twenty-one".