211020000121503 has 48 divisors (see below), whose sum is σ = 319810101811200. Its totient is φ = 133922471584320.

The previous prime is 211020000121501. The next prime is 211020000121547. The reversal of 211020000121503 is 305121000020112.

211020000121503 is a `hidden beast` number, since 21 + 1 + 0 + 20 + 0 + 0 + 0 + 121 + 503 = 666.

It is not a de Polignac number, because 211020000121503 - 2¹ = 211020000121501 is a prime.

It is a super-2 number, since 2×211020000121503² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020000121501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20733075 + ... + 29187332.

It is an arithmetic number, because the mean of its divisors is an integer number (6662710454400).

Almost surely, 2^{211020000121503} is an apocalyptic number.

211020000121503 is a deficient number, since it is larger than the sum of its proper divisors (108790101689697).

211020000121503 is a wasteful number, since it uses less digits than its factorization.

211020000121503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49920692 (or 49920689 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 211020000121503 its reverse (305121000020112), we get a palindrome (516141000141615).

The spelling of 211020000121503 in words is "two hundred eleven trillion, twenty billion, one hundred twenty-one thousand, five hundred three".