2187240701 has 2 divisors, whose sum is σ = 2187240702. Its totient is φ = 2187240700.

The previous prime is 2187240691. The next prime is 2187240703. The reversal of 2187240701 is 1070427812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2179956100 + 7284601 = 46690^2 + 2699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2187240701 is a prime.

It is a super-2 number, since 2×2187240701² = 9568043768221942802, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2187240703, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2187240703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093620350 + 1093620351.

It is an arithmetic number, because the mean of its divisors is an integer number (1093620351).

Almost surely, 2^2187240701 is an apocalyptic number.

It is an amenable number.

2187240701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187240701 is an equidigital number, since it uses as much as digits as its factorization.

2187240701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 2187240701 is about 46767.9452296121. The cubic root of 2187240701 is about 1298.0722316825.

The spelling of 2187240701 in words is "two billion, one hundred eighty-seven million, two hundred forty thousand, seven hundred one".