5191221937211 has 8 divisors (see below), whose sum is σ = 5253860150784. Its totient is φ = 5128585946920.

The previous prime is 5191221937207. The next prime is 5191221937247. The reversal of 5191221937211 is 1127391221915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5191221937211 - 2² = 5191221937207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5191221937271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4408046 + ... + 5460156.

It is an arithmetic number, because the mean of its divisors is an integer number (656732518848).

Almost surely, 2^{5191221937211} is an apocalyptic number.

5191221937211 is a deficient number, since it is larger than the sum of its proper divisors (62638213573).

5191221937211 is a wasteful number, since it uses less digits than its factorization.

5191221937211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111641.

The product of its digits is 68040, while the sum is 44.

The spelling of 5191221937211 in words is "five trillion, one hundred ninety-one billion, two hundred twenty-one million, nine hundred thirty-seven thousand, two hundred eleven".