220101010691 has 2 divisors, whose sum is σ = 220101010692. Its totient is φ = 220101010690.

The previous prime is 220101010681. The next prime is 220101010729. The reversal of 220101010691 is 196010101022.

It is a happy number.

220101010691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220101010691 - 2¹⁴ = 220100994307 is a prime.

It is not a weakly prime, because it can be changed into another prime (220101010681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050505345 + 110050505346.

It is an arithmetic number, because the mean of its divisors is an integer number (110050505346).

Almost surely, 2^220101010691 is an apocalyptic number.

220101010691 is a deficient number, since it is larger than the sum of its proper divisors (1).

220101010691 is an equidigital number, since it uses as much as digits as its factorization.

220101010691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 220101010691 in words is "two hundred twenty billion, one hundred one million, ten thousand, six hundred ninety-one".