5311215065121 has 32 divisors (see below), whose sum is σ = 8172857671680. Its totient is φ = 3005145676224.

The previous prime is 5311215065113. The next prime is 5311215065131. The reversal of 5311215065121 is 1215605121135.

It is a happy number.

It is not a de Polignac number, because 5311215065121 - 2³ = 5311215065113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5311215065131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17999056 + ... + 18291758.

It is an arithmetic number, because the mean of its divisors is an integer number (255401802240).

Almost surely, 2^{5311215065121} is an apocalyptic number.

It is an amenable number.

5311215065121 is a deficient number, since it is larger than the sum of its proper divisors (2861642606559).

5311215065121 is a wasteful number, since it uses less digits than its factorization.

5311215065121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301205.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 5311215065121 in words is "five trillion, three hundred eleven billion, two hundred fifteen million, sixty-five thousand, one hundred twenty-one".