120002021101021 has 2 divisors, whose sum is σ = 120002021101022. Its totient is φ = 120002021101020.

The previous prime is 120002021100967. The next prime is 120002021101063. The reversal of 120002021101021 is 120101120200021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78944824308100 + 41057196792921 = 8885090^2 + 6407589^2 .

It is a cyclic number.

It is not a de Polignac number, because 120002021101021 - 2¹⁹ = 120002020576733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120002021100992 and 120002021101010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120008021101021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60001010550510 + 60001010550511.

It is an arithmetic number, because the mean of its divisors is an integer number (60001010550511).

Almost surely, 2^{120002021101021} is an apocalyptic number.

It is an amenable number.

120002021101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120002021101021 is an equidigital number, since it uses as much as digits as its factorization.

120002021101021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 120002021101021 its reverse (120101120200021), we get a palindrome (240103141301042).

The spelling of 120002021101021 in words is "one hundred twenty trillion, two billion, twenty-one million, one hundred one thousand, twenty-one".