103121220311 has 2 divisors, whose sum is σ = 103121220312. Its totient is φ = 103121220310.

The previous prime is 103121220283. The next prime is 103121220347. The reversal of 103121220311 is 113022121301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103121220311 - 2⁶ = 103121220247 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103121220311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103121220011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51560610155 + 51560610156.

It is an arithmetic number, because the mean of its divisors is an integer number (51560610156).

Almost surely, 2^103121220311 is an apocalyptic number.

103121220311 is a deficient number, since it is larger than the sum of its proper divisors (1).

103121220311 is an equidigital number, since it uses as much as digits as its factorization.

103121220311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103121220311 its reverse (113022121301), we get a palindrome (216143341612).

The spelling of 103121220311 in words is "one hundred three billion, one hundred twenty-one million, two hundred twenty thousand, three hundred eleven".