100121010103 has 2 divisors, whose sum is σ = 100121010104. Its totient is φ = 100121010102.

The previous prime is 100121010091. The next prime is 100121010109. The reversal of 100121010103 is 301010121001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100121010103 - 2⁹ = 100121009591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100121010103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121010109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060505051 + 50060505052.

It is an arithmetic number, because the mean of its divisors is an integer number (50060505052).

Almost surely, 2^100121010103 is an apocalyptic number.

100121010103 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121010103 is an equidigital number, since it uses as much as digits as its factorization.

100121010103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 100121010103 its reverse (301010121001), we get a palindrome (401131131104).

The spelling of 100121010103 in words is "one hundred billion, one hundred twenty-one million, ten thousand, one hundred three".