120011001011221 has 2 divisors, whose sum is σ = 120011001011222. Its totient is φ = 120011001011220.

The previous prime is 120011001011197. The next prime is 120011001011309. The reversal of 120011001011221 is 122110100110021.

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., 118352945612196 + 1658055399025 = 10879014^2 + 1287655^2 .

It is an emirp because it is prime and its reverse (122110100110021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120011001011221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120011001011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005500505610 + 60005500505611.

It is an arithmetic number, because the mean of its divisors is an integer number (60005500505611).

Almost surely, 2^{120011001011221} is an apocalyptic number.

It is an amenable number.

120011001011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120011001011221 is an equidigital number, since it uses as much as digits as its factorization.

120011001011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120011001011221 its reverse (122110100110021), we get a palindrome (242121101121242).

The spelling of 120011001011221 in words is "one hundred twenty trillion, eleven billion, one million, eleven thousand, two hundred twenty-one".