121021111100103 has 8 divisors (see below), whose sum is σ = 164794704476928. Its totient is φ = 78964129228344.

The previous prime is 121021111100081. The next prime is 121021111100143. The reversal of 121021111100103 is 301001111120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121021111100103 - 2⁶ = 121021111100039 is a prime.

It is a super-2 number, since 2×121021111100103² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021111100143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429152876101 + ... + 429152876382.

It is an arithmetic number, because the mean of its divisors is an integer number (20599338059616).

Almost surely, 2^{121021111100103} is an apocalyptic number.

121021111100103 is a deficient number, since it is larger than the sum of its proper divisors (43773593376825).

121021111100103 is an equidigital number, since it uses as much as digits as its factorization.

121021111100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858305752533.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 121021111100103 its reverse (301001111120121), we get a palindrome (422022222220224).

The spelling of 121021111100103 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred eleven million, one hundred thousand, one hundred three".