2141721007 has 2 divisors, whose sum is σ = 2141721008. Its totient is φ = 2141721006.

The previous prime is 2141720993. The next prime is 2141721011. The reversal of 2141721007 is 7001271412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2141721007 - 2⁷ = 2141720879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141721017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070860503 + 1070860504.

It is an arithmetic number, because the mean of its divisors is an integer number (1070860504).

Almost surely, 2^2141721007 is an apocalyptic number.

2141721007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141721007 is an equidigital number, since it uses as much as digits as its factorization.

2141721007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 2141721007 is about 46278.7316917826. The cubic root of 2141721007 is about 1289.0041002461.

Adding to 2141721007 its reverse (7001271412), we get a palindrome (9142992419).

It can be divided in two parts, 21417 and 21007, that added together give a palindrome (42424).

The spelling of 2141721007 in words is "two billion, one hundred forty-one million, seven hundred twenty-one thousand, seven".