2211551117 has 2 divisors, whose sum is σ = 2211551118. Its totient is φ = 2211551116.

The previous prime is 2211551101. The next prime is 2211551119. The reversal of 2211551117 is 7111551122.

2211551117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1756112836 + 455438281 = 41906^2 + 21341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211551117 - 2⁴ = 2211551101 is a prime.

Together with 2211551119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211551119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105775558 + 1105775559.

It is an arithmetic number, because the mean of its divisors is an integer number (1105775559).

Almost surely, 2^2211551117 is an apocalyptic number.

It is an amenable number.

2211551117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211551117 is an equidigital number, since it uses as much as digits as its factorization.

2211551117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 700, while the sum is 26.

The square root of 2211551117 is about 47027.1317113855. The cubic root of 2211551117 is about 1302.8637297470.

The spelling of 2211551117 in words is "two billion, two hundred eleven million, five hundred fifty-one thousand, one hundred seventeen".