120120011002021 has 4 divisors (see below), whose sum is σ = 120120086396044. Its totient is φ = 120119935608000.

The previous prime is 120120011001869. The next prime is 120120011002097. The reversal of 120120011002021 is 120200110021021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119957497205121 + 162513796900 = 10952511^2 + 403130^2 .

It is a cyclic number.

It is not a de Polignac number, because 120120011002021 - 2¹⁷ = 120120010870949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120120011001992 and 120120011002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120011042021) 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, 35254410 + ... + 38511211.

It is an arithmetic number, because the mean of its divisors is an integer number (30030021599011).

Almost surely, 2^{120120011002021} is an apocalyptic number.

It is an amenable number.

120120011002021 is a deficient number, since it is larger than the sum of its proper divisors (75394023).

120120011002021 is an equidigital number, since it uses as much as digits as its factorization.

120120011002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75394022.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120120011002021 its reverse (120200110021021), we get a palindrome (240320121023042).

The spelling of 120120011002021 in words is "one hundred twenty trillion, one hundred twenty billion, eleven million, two thousand, twenty-one".