211300121421 has 8 divisors (see below), whose sum is σ = 313037216960. Its totient is φ = 140866747596.

The previous prime is 211300121413. The next prime is 211300121467. The reversal of 211300121421 is 124121003112.

211300121421 is a `hidden beast` number, since 211 + 30 + 0 + 1 + 2 + 1 + 421 = 666.

It is not a de Polignac number, because 211300121421 - 2³ = 211300121413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211300121394 and 211300121403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211300121411) 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, 3912965185 + ... + 3912965238.

It is an arithmetic number, because the mean of its divisors is an integer number (39129652120).

Almost surely, 2^211300121421 is an apocalyptic number.

It is an amenable number.

211300121421 is a deficient number, since it is larger than the sum of its proper divisors (101737095539).

211300121421 is an equidigital number, since it uses as much as digits as its factorization.

211300121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825930432 (or 7825930426 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211300121421 its reverse (124121003112), we get a palindrome (335421124533).

The spelling of 211300121421 in words is "two hundred eleven billion, three hundred million, one hundred twenty-one thousand, four hundred twenty-one".