5123215011 has 4 divisors (see below), whose sum is σ = 6830953352. Its totient is φ = 3415476672.

The previous prime is 5123214977. The next prime is 5123215049. The reversal of 5123215011 is 1105123215.

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

It is not a de Polignac number, because 5123215011 - 2²⁶ = 5056106147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123215061) 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, 853869166 + ... + 853869171.

It is an arithmetic number, because the mean of its divisors is an integer number (1707738338).

Almost surely, 2^5123215011 is an apocalyptic number.

5123215011 is a deficient number, since it is larger than the sum of its proper divisors (1707738341).

5123215011 is a wasteful number, since it uses less digits than its factorization.

5123215011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707738340.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 5123215011 is about 71576.6373267144. The cubic root of 5123215011 is about 1723.9084333764.

Adding to 5123215011 its reverse (1105123215), we get a palindrome (6228338226).

The spelling of 5123215011 in words is "five billion, one hundred twenty-three million, two hundred fifteen thousand, eleven".