120021113 has 4 divisors (see below), whose sum is σ = 120059508. Its totient is φ = 119982720.

The previous prime is 120021101. The next prime is 120021137. The reversal of 120021113 is 311120021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311120021 = 1607 ⋅193603.

It can be written as a sum of positive squares in 2 ways, for example, as 43930384 + 76090729 = 6628^2 + 8723^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021113 - 2⁶ = 120021049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021094 and 120021103.

It is not an unprimeable number, because it can be changed into a prime (120021413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14048 + ... + 20913.

It is an arithmetic number, because the mean of its divisors is an integer number (30014877).

Almost surely, 2^120021113 is an apocalyptic number.

It is an amenable number.

120021113 is a deficient number, since it is larger than the sum of its proper divisors (38395).

120021113 is an equidigital number, since it uses as much as digits as its factorization.

120021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38394.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 120021113 is about 10955.4147799159. The cubic root of 120021113 is about 493.2713404673.

Adding to 120021113 its reverse (311120021), we get a palindrome (431141134).

The spelling of 120021113 in words is "one hundred twenty million, twenty-one thousand, one hundred thirteen".