120011112222121 has 2 divisors, whose sum is σ = 120011112222122. Its totient is φ = 120011112222120.

The previous prime is 120011112222091. The next prime is 120011112222149. The reversal of 120011112222121 is 121222211110021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78461949515625 + 41549162706496 = 8857875^2 + 6445864^2 .

It is a cyclic number.

It is not a de Polignac number, because 120011112222121 - 2¹³ = 120011112213929 is a prime.

It is not a weakly prime, because it can be changed into another prime (120011112222721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005556111060 + 60005556111061.

It is an arithmetic number, because the mean of its divisors is an integer number (60005556111061).

Almost surely, 2^{120011112222121} is an apocalyptic number.

It is an amenable number.

120011112222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120011112222121 is an equidigital number, since it uses as much as digits as its factorization.

120011112222121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120011112222121 its reverse (121222211110021), we get a palindrome (241233323332142).

The spelling of 120011112222121 in words is "one hundred twenty trillion, eleven billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".