10120000002221 has 2 divisors, whose sum is σ = 10120000002222. Its totient is φ = 10120000002220.

The previous prime is 10120000002187. The next prime is 10120000002341. The reversal of 10120000002221 is 12220000002101.

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., 8173961052196 + 1946038950025 = 2859014^2 + 1395005^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120000002221 - 2⁶ = 10120000002157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120000022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060000001110 + 5060000001111.

It is an arithmetic number, because the mean of its divisors is an integer number (5060000001111).

Almost surely, 2^{10120000002221} is an apocalyptic number.

It is an amenable number.

10120000002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120000002221 is an equidigital number, since it uses as much as digits as its factorization.

10120000002221 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 10120000002221 its reverse (12220000002101), we get a palindrome (22340000004322).

The spelling of 10120000002221 in words is "ten trillion, one hundred twenty billion, two thousand, two hundred twenty-one".