2120120003021 has 2 divisors, whose sum is σ = 2120120003022. Its totient is φ = 2120120003020.

The previous prime is 2120120003011. The next prime is 2120120003063. The reversal of 2120120003021 is 1203000210212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1125540637225 + 994579365796 = 1060915^2 + 997286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120120003021 - 2¹⁴ = 2120119986637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120120002987 and 2120120003005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120120003011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060060001510 + 1060060001511.

It is an arithmetic number, because the mean of its divisors is an integer number (1060060001511).

Almost surely, 2^{2120120003021} is an apocalyptic number.

It is an amenable number.

2120120003021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120120003021 is an equidigital number, since it uses as much as digits as its factorization.

2120120003021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2120120003021 its reverse (1203000210212), we get a palindrome (3323120213233).

The spelling of 2120120003021 in words is "two trillion, one hundred twenty billion, one hundred twenty million, three thousand, twenty-one".