7212939961111 has 2 divisors, whose sum is σ = 7212939961112. Its totient is φ = 7212939961110.

The previous prime is 7212939961109. The next prime is 7212939961151. The reversal of 7212939961111 is 1111699392127.

It is a weak prime.

It is an emirp because it is prime and its reverse (1111699392127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7212939961111 - 2¹ = 7212939961109 is a prime.

Together with 7212939961109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7212939961151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606469980555 + 3606469980556.

It is an arithmetic number, because the mean of its divisors is an integer number (3606469980556).

Almost surely, 2^{7212939961111} is an apocalyptic number.

7212939961111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7212939961111 is an equidigital number, since it uses as much as digits as its factorization.

7212939961111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 52.

The spelling of 7212939961111 in words is "seven trillion, two hundred twelve billion, nine hundred thirty-nine million, nine hundred sixty-one thousand, one hundred eleven".