2115729229 has 2 divisors, whose sum is σ = 2115729230. Its totient is φ = 2115729228.

The previous prime is 2115729181. The next prime is 2115729233. The reversal of 2115729229 is 9229275112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1813908100 + 301821129 = 42590^2 + 17373^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115729229 - 2¹³ = 2115721037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2115729191 and 2115729200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115729269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057864614 + 1057864615.

It is an arithmetic number, because the mean of its divisors is an integer number (1057864615).

Almost surely, 2^2115729229 is an apocalyptic number.

It is an amenable number.

2115729229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115729229 is an equidigital number, since it uses as much as digits as its factorization.

2115729229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 2115729229 is about 45997.0567427961. The cubic root of 2115729229 is about 1283.7684413790.

The spelling of 2115729229 in words is "two billion, one hundred fifteen million, seven hundred twenty-nine thousand, two hundred twenty-nine".