2171123069 has 2 divisors, whose sum is σ = 2171123070. Its totient is φ = 2171123068.

The previous prime is 2171123021. The next prime is 2171123093. The reversal of 2171123069 is 9603211712.

2171123069 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., 1336779844 + 834343225 = 36562^2 + 28885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171123069 - 2¹² = 2171118973 is a prime.

It is a super-2 number, since 2×2171123069² = 9427550761487957522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171123869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085561534 + 1085561535.

It is an arithmetic number, because the mean of its divisors is an integer number (1085561535).

Almost surely, 2^2171123069 is an apocalyptic number.

It is an amenable number.

2171123069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171123069 is an equidigital number, since it uses as much as digits as its factorization.

2171123069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2171123069 is about 46595.3116632993. The cubic root of 2171123069 is about 1294.8758981267.

The spelling of 2171123069 in words is "two billion, one hundred seventy-one million, one hundred twenty-three thousand, sixty-nine".