121100121221003 has 2 divisors, whose sum is σ = 121100121221004. Its totient is φ = 121100121221002.

The previous prime is 121100121220961. The next prime is 121100121221011. The reversal of 121100121221003 is 300122121001121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121100121221003 - 2²⁶ = 121100054112139 is a prime.

It is a super-2 number, since 2×121100121221003² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121100121221033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550060610501 + 60550060610502.

It is an arithmetic number, because the mean of its divisors is an integer number (60550060610502).

Almost surely, 2^{121100121221003} is an apocalyptic number.

121100121221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100121221003 is an equidigital number, since it uses as much as digits as its factorization.

121100121221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121100121221003 its reverse (300122121001121), we get a palindrome (421222242222124).

The spelling of 121100121221003 in words is "one hundred twenty-one trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, three".