5111212321205 has 4 divisors (see below), whose sum is σ = 6133454785452. Its totient is φ = 4088969856960.

The previous prime is 5111212321129. The next prime is 5111212321213. The reversal of 5111212321205 is 5021232121115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2639581853041 + 2471630468164 = 1624679^2 + 1572142^2 .

It is not a de Polignac number, because 5111212321205 - 2¹⁸ = 5111212059061 is a prime.

It is a super-2 number, since 2×5111212321205² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511121232116 + ... + 511121232125.

It is an arithmetic number, because the mean of its divisors is an integer number (1533363696363).

Almost surely, 2^{5111212321205} is an apocalyptic number.

It is an amenable number.

5111212321205 is a deficient number, since it is larger than the sum of its proper divisors (1022242464247).

5111212321205 is a wasteful number, since it uses less digits than its factorization.

5111212321205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022242464246.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 5111212321205 in words is "five trillion, one hundred eleven billion, two hundred twelve million, three hundred twenty-one thousand, two hundred five".