5111203021421 has 48 divisors (see below), whose sum is σ = 6184502409600. Its totient is φ = 4131571481856.

The previous prime is 5111203021399. The next prime is 5111203021423. The reversal of 5111203021421 is 1241203021115.

It is not a de Polignac number, because 5111203021421 - 2¹⁴ = 5111203005037 is a prime.

It is a super-2 number, since 2×5111203021421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111203021423) 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 47 ways as a sum of consecutive naturals, for example, 564208190 + ... + 564217248.

It is an arithmetic number, because the mean of its divisors is an integer number (128843800200).

Almost surely, 2^{5111203021421} is an apocalyptic number.

It is an amenable number.

5111203021421 is a deficient number, since it is larger than the sum of its proper divisors (1073299388179).

5111203021421 is an equidigital number, since it uses as much as digits as its factorization.

5111203021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9606 (or 9377 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 5111203021421 its reverse (1241203021115), we get a palindrome (6352406042536).

The spelling of 5111203021421 in words is "five trillion, one hundred eleven billion, two hundred three million, twenty-one thousand, four hundred twenty-one".