5112221771551 has 4 divisors (see below), whose sum is σ = 5114741350600. Its totient is φ = 5109702192504.

The previous prime is 5112221771543. The next prime is 5112221771609. The reversal of 5112221771551 is 1551771222115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5112221771551 - 2³ = 5112221771543 is a prime.

It is a super-2 number, since 2×5112221771551² (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 (5112221778551) 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, 1259786481 + ... + 1259790538.

It is an arithmetic number, because the mean of its divisors is an integer number (1278685337650).

Almost surely, 2^{5112221771551} is an apocalyptic number.

5112221771551 is a deficient number, since it is larger than the sum of its proper divisors (2519579049).

5112221771551 is a wasteful number, since it uses less digits than its factorization.

5112221771551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519579048.

The product of its digits is 49000, while the sum is 40.

Adding to 5112221771551 its reverse (1551771222115), we get a palindrome (6663992993666).

The spelling of 5112221771551 in words is "five trillion, one hundred twelve billion, two hundred twenty-one million, seven hundred seventy-one thousand, five hundred fifty-one".