1120211221991 has 2 divisors, whose sum is σ = 1120211221992. Its totient is φ = 1120211221990.

The previous prime is 1120211221963. The next prime is 1120211222041. The reversal of 1120211221991 is 1991221120211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120211221991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120211221091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560105610995 + 560105610996.

It is an arithmetic number, because the mean of its divisors is an integer number (560105610996).

Almost surely, 2^{1120211221991} is an apocalyptic number.

1120211221991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120211221991 is an equidigital number, since it uses as much as digits as its factorization.

1120211221991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 1120211221991 in words is "one trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, nine hundred ninety-one".