121111202010103 has 2 divisors, whose sum is σ = 121111202010104. Its totient is φ = 121111202010102.

The previous prime is 121111202010101. The next prime is 121111202010107. The reversal of 121111202010103 is 301010202111121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121111202010103 - 2¹ = 121111202010101 is a prime.

Together with 121111202010101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121111202010101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555601005051 + 60555601005052.

It is an arithmetic number, because the mean of its divisors is an integer number (60555601005052).

Almost surely, 2^{121111202010103} is an apocalyptic number.

121111202010103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111202010103 is an equidigital number, since it uses as much as digits as its factorization.

121111202010103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121111202010103 its reverse (301010202111121), we get a palindrome (422121404121224).

The spelling of 121111202010103 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred two million, ten thousand, one hundred three".