213003044121 has 16 divisors (see below), whose sum is σ = 325495557504. Its totient is φ = 121371216384.

The previous prime is 213003044119. The next prime is 213003044129. The reversal of 213003044121 is 121440300312.

213003044121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213003044121 - 2¹ = 213003044119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213003044129) 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 15 ways as a sum of consecutive naturals, for example, 14359446 + ... + 14374271.

It is an arithmetic number, because the mean of its divisors is an integer number (20343472344).

Almost surely, 2^213003044121 is an apocalyptic number.

213003044121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213003044121 is a deficient number, since it is larger than the sum of its proper divisors (112492513383).

213003044121 is a wasteful number, since it uses less digits than its factorization.

213003044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28734080.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213003044121 its reverse (121440300312), we get a palindrome (334443344433).

The spelling of 213003044121 in words is "two hundred thirteen billion, three million, forty-four thousand, one hundred twenty-one".