120002210110021 has 2 divisors, whose sum is σ = 120002210110022. Its totient is φ = 120002210110020.

The previous prime is 120002210109967. The next prime is 120002210110117. The reversal of 120002210110021 is 120011012200021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116614729368900 + 3387480741121 = 10798830^2 + 1840511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120002210110021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120002210109983 and 120002210110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120002210110121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60001105055010 + 60001105055011.

It is an arithmetic number, because the mean of its divisors is an integer number (60001105055011).

Almost surely, 2^{120002210110021} is an apocalyptic number.

It is an amenable number.

120002210110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120002210110021 is an equidigital number, since it uses as much as digits as its factorization.

120002210110021 is an evil number, because the sum of its binary digits is even.

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

Adding to 120002210110021 its reverse (120011012200021), we get a palindrome (240013222310042).

The spelling of 120002210110021 in words is "one hundred twenty trillion, two billion, two hundred ten million, one hundred ten thousand, twenty-one".