5111221311253 has 4 divisors (see below), whose sum is σ = 5132607174720. Its totient is φ = 5089835447788.

The previous prime is 5111221311233. The next prime is 5111221311283. The reversal of 5111221311253 is 3521131221115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5111221311253 is a prime.

It is a super-2 number, since 2×5111221311253² (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 (5111221311223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10692931375 + ... + 10692931852.

It is an arithmetic number, because the mean of its divisors is an integer number (1283151793680).

Almost surely, 2^{5111221311253} is an apocalyptic number.

It is an amenable number.

5111221311253 is a deficient number, since it is larger than the sum of its proper divisors (21385863467).

5111221311253 is a wasteful number, since it uses less digits than its factorization.

5111221311253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21385863466.

The product of its digits is 1800, while the sum is 28.

Adding to 5111221311253 its reverse (3521131221115), we get a palindrome (8632352532368).

The spelling of 5111221311253 in words is "five trillion, one hundred eleven billion, two hundred twenty-one million, three hundred eleven thousand, two hundred fifty-three".