3212110199491 has 2 divisors, whose sum is σ = 3212110199492. Its totient is φ = 3212110199490.

The previous prime is 3212110199489. The next prime is 3212110199533. The reversal of 3212110199491 is 1949910112123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3212110199491 - 2¹ = 3212110199489 is a prime.

It is a super-2 number, since 2×3212110199491² (a number of 26 digits) contains 22 as substring.

Together with 3212110199489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3212110199591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606055099745 + 1606055099746.

It is an arithmetic number, because the mean of its divisors is an integer number (1606055099746).

Almost surely, 2^{3212110199491} is an apocalyptic number.

3212110199491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212110199491 is an equidigital number, since it uses as much as digits as its factorization.

3212110199491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 3212110199491 in words is "three trillion, two hundred twelve billion, one hundred ten million, one hundred ninety-nine thousand, four hundred ninety-one".