121001221103 has 4 divisors (see below), whose sum is σ = 138287109840. Its totient is φ = 103715332368.

The previous prime is 121001221087. The next prime is 121001221139. The reversal of 121001221103 is 301122100121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121001221103 - 2⁴ = 121001221087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001221903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8642944358 + ... + 8642944371.

It is an arithmetic number, because the mean of its divisors is an integer number (34571777460).

Almost surely, 2^121001221103 is an apocalyptic number.

121001221103 is a deficient number, since it is larger than the sum of its proper divisors (17285888737).

121001221103 is an equidigital number, since it uses as much as digits as its factorization.

121001221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285888736.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121001221103 its reverse (301122100121), we get a palindrome (422123321224).

The spelling of 121001221103 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, one hundred three".