10102220000021 has 2 divisors, whose sum is σ = 10102220000022. Its totient is φ = 10102220000020.

The previous prime is 10102220000011. The next prime is 10102220000051. The reversal of 10102220000021 is 12000002220101.

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., 7014605220100 + 3087614779921 = 2648510^2 + 1757161^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102220000021 - 2⁶ = 10102219999957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10102219999957 and 10102220000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10102220000011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051110000010 + 5051110000011.

It is an arithmetic number, because the mean of its divisors is an integer number (5051110000011).

Almost surely, 2^{10102220000021} is an apocalyptic number.

It is an amenable number.

10102220000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102220000021 is an equidigital number, since it uses as much as digits as its factorization.

10102220000021 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 11.

Adding to 10102220000021 its reverse (12000002220101), we get a palindrome (22102222220122).

The spelling of 10102220000021 in words is "ten trillion, one hundred two billion, two hundred twenty million, twenty-one", and thus it is an aban number.