1120621871 has 2 divisors, whose sum is σ = 1120621872. Its totient is φ = 1120621870.

The previous prime is 1120621867. The next prime is 1120621889. The reversal of 1120621871 is 1781260211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1120621871 - 2² = 1120621867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120621841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560310935 + 560310936.

It is an arithmetic number, because the mean of its divisors is an integer number (560310936).

Almost surely, 2^1120621871 is an apocalyptic number.

1120621871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120621871 is an equidigital number, since it uses as much as digits as its factorization.

1120621871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 1120621871 is about 33475.6907471676. The cubic root of 1120621871 is about 1038.6909908492.

The spelling of 1120621871 in words is "one billion, one hundred twenty million, six hundred twenty-one thousand, eight hundred seventy-one".