120213310991 has 2 divisors, whose sum is σ = 120213310992. Its totient is φ = 120213310990.

The previous prime is 120213310963. The next prime is 120213310993. The reversal of 120213310991 is 199013312021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120213310991 is a prime.

Together with 120213310993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120213310993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106655495 + 60106655496.

It is an arithmetic number, because the mean of its divisors is an integer number (60106655496).

Almost surely, 2^120213310991 is an apocalyptic number.

120213310991 is a deficient number, since it is larger than the sum of its proper divisors (1).

120213310991 is an equidigital number, since it uses as much as digits as its factorization.

120213310991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 120213310991 in words is "one hundred twenty billion, two hundred thirteen million, three hundred ten thousand, nine hundred ninety-one".