3201112021391 has 2 divisors, whose sum is σ = 3201112021392. Its totient is φ = 3201112021390.

The previous prime is 3201112021357. The next prime is 3201112021423. The reversal of 3201112021391 is 1931202111023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3201112021391 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3201112021391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3201112023391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600556010695 + 1600556010696.

It is an arithmetic number, because the mean of its divisors is an integer number (1600556010696).

Almost surely, 2^{3201112021391} is an apocalyptic number.

3201112021391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3201112021391 is an equidigital number, since it uses as much as digits as its factorization.

3201112021391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 3201112021391 in words is "three trillion, two hundred one billion, one hundred twelve million, twenty-one thousand, three hundred ninety-one".