121103300021 has 8 divisors (see below), whose sum is σ = 132120146304. Its totient is φ = 110087696320.

The previous prime is 121103299973. The next prime is 121103300029. The reversal of 121103300021 is 120003301121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121103300021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121103299969 and 121103300005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103300029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100685 + ... + 502338.

It is an arithmetic number, because the mean of its divisors is an integer number (16515018288).

Almost surely, 2^121103300021 is an apocalyptic number.

121103300021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121103300021 is a deficient number, since it is larger than the sum of its proper divisors (11016846283).

121103300021 is a wasteful number, since it uses less digits than its factorization.

121103300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621291.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 121103300021 its reverse (120003301121), we get a palindrome (241106601142).

It can be divided in two parts, 121103 and 300021, that added together give a palindrome (421124).

The spelling of 121103300021 in words is "one hundred twenty-one billion, one hundred three million, three hundred thousand, twenty-one".