121100111053 has 2 divisors, whose sum is σ = 121100111054. Its totient is φ = 121100111052.

The previous prime is 121100111039. The next prime is 121100111081. The reversal of 121100111053 is 350111001121.

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., 108317999689 + 12782111364 = 329117^2 + 113058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100111053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121100111023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550055526 + 60550055527.

It is an arithmetic number, because the mean of its divisors is an integer number (60550055527).

Almost surely, 2^121100111053 is an apocalyptic number.

It is an amenable number.

121100111053 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100111053 is an equidigital number, since it uses as much as digits as its factorization.

121100111053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 121100111053 its reverse (350111001121), we get a palindrome (471211112174).

The spelling of 121100111053 in words is "one hundred twenty-one billion, one hundred million, one hundred eleven thousand, fifty-three".