4021261117 has 2 divisors, whose sum is σ = 4021261118. Its totient is φ = 4021261116.

The previous prime is 4021260989. The next prime is 4021261159. The reversal of 4021261117 is 7111621204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2761082116 + 1260179001 = 52546^2 + 35499^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021261117 - 2⁷ = 4021260989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021261091 and 4021261100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021261217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010630558 + 2010630559.

It is an arithmetic number, because the mean of its divisors is an integer number (2010630559).

Almost surely, 2^4021261117 is an apocalyptic number.

It is an amenable number.

4021261117 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021261117 is an equidigital number, since it uses as much as digits as its factorization.

4021261117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 4021261117 is about 63413.4143300927. The cubic root of 4021261117 is about 1590.2085768595.

The spelling of 4021261117 in words is "four billion, twenty-one million, two hundred sixty-one thousand, one hundred seventeen".