1201220120101 has 2 divisors, whose sum is σ = 1201220120102. Its totient is φ = 1201220120100.

The previous prime is 1201220120081. The next prime is 1201220120119. The reversal of 1201220120101 is 1010210221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894110189476 + 307109930625 = 945574^2 + 554175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201220120101 - 2³¹ = 1199072636453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201220120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610060050 + 600610060051.

It is an arithmetic number, because the mean of its divisors is an integer number (600610060051).

Almost surely, 2^{1201220120101} is an apocalyptic number.

It is an amenable number.

1201220120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201220120101 is an equidigital number, since it uses as much as digits as its factorization.

1201220120101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201220120101 its reverse (1010210221021), we get a palindrome (2211430341122).

The spelling of 1201220120101 in words is "one trillion, two hundred one billion, two hundred twenty million, one hundred twenty thousand, one hundred one".