100121321011 has 2 divisors, whose sum is σ = 100121321012. Its totient is φ = 100121321010.

The previous prime is 100121320987. The next prime is 100121321033. The reversal of 100121321011 is 110123121001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100121321011 - 2⁹ = 100121320499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100121320982 and 100121321000.

It is not a weakly prime, because it can be changed into another prime (100121321071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060660505 + 50060660506.

It is an arithmetic number, because the mean of its divisors is an integer number (50060660506).

Almost surely, 2^100121321011 is an apocalyptic number.

100121321011 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121321011 is an equidigital number, since it uses as much as digits as its factorization.

100121321011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 100121321011 its reverse (110123121001), we get a palindrome (210244442012).

The spelling of 100121321011 in words is "one hundred billion, one hundred twenty-one million, three hundred twenty-one thousand, eleven".