2220801857 has 2 divisors, whose sum is σ = 2220801858. Its totient is φ = 2220801856.

The previous prime is 2220801853. The next prime is 2220801881. The reversal of 2220801857 is 7581080222.

2220801857 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 can be written as a sum of positive squares in only one way, i.e., 2206086961 + 14714896 = 46969^2 + 3836^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220801857 - 2² = 2220801853 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220801853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110400928 + 1110400929.

It is an arithmetic number, because the mean of its divisors is an integer number (1110400929).

Almost surely, 2^2220801857 is an apocalyptic number.

It is an amenable number.

2220801857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220801857 is an equidigital number, since it uses as much as digits as its factorization.

2220801857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 2220801857 is about 47125.3844228352. The cubic root of 2220801857 is about 1304.6777940412.

The spelling of 2220801857 in words is "two billion, two hundred twenty million, eight hundred one thousand, eight hundred fifty-seven".