121211300421003 has 16 divisors (see below), whose sum is σ = 174049091870976. Its totient is φ = 74590671035040.

The previous prime is 121211300420971. The next prime is 121211300421007. The reversal of 121211300421003 is 300124003112121.

121211300421003 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 121211300421003 - 2⁵ = 121211300420971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121211300421007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15431133 + ... + 21921278.

It is an arithmetic number, because the mean of its divisors is an integer number (10878068241936).

Almost surely, 2^{121211300421003} is an apocalyptic number.

121211300421003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121211300421003 is a deficient number, since it is larger than the sum of its proper divisors (52837791449973).

121211300421003 is a wasteful number, since it uses less digits than its factorization.

121211300421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37435634.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121211300421003 its reverse (300124003112121), we get a palindrome (421335303533124).

The spelling of 121211300421003 in words is "one hundred twenty-one trillion, two hundred eleven billion, three hundred million, four hundred twenty-one thousand, three".