10120201211221 has 2 divisors, whose sum is σ = 10120201211222. Its totient is φ = 10120201211220.

The previous prime is 10120201211201. The next prime is 10120201211287. The reversal of 10120201211221 is 12211210202101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9446316192196 + 673885019025 = 3073486^2 + 820905^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120201211221 - 2⁵ = 10120201211189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10120201211195 and 10120201211204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120201211201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060100605610 + 5060100605611.

It is an arithmetic number, because the mean of its divisors is an integer number (5060100605611).

Almost surely, 2^{10120201211221} is an apocalyptic number.

It is an amenable number.

10120201211221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120201211221 is an equidigital number, since it uses as much as digits as its factorization.

10120201211221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10120201211221 its reverse (12211210202101), we get a palindrome (22331411413322).

The spelling of 10120201211221 in words is "ten trillion, one hundred twenty billion, two hundred one million, two hundred eleven thousand, two hundred twenty-one".