2101312229 has 2 divisors, whose sum is σ = 2101312230. Its totient is φ = 2101312228.

The previous prime is 2101312193. The next prime is 2101312243. The reversal of 2101312229 is 9222131012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1892076004 + 209236225 = 43498^2 + 14465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101312229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101312249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050656114 + 1050656115.

It is an arithmetic number, because the mean of its divisors is an integer number (1050656115).

Almost surely, 2^2101312229 is an apocalyptic number.

It is an amenable number.

2101312229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101312229 is an equidigital number, since it uses as much as digits as its factorization.

2101312229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2101312229 is about 45840.0723057894. The cubic root of 2101312229 is about 1280.8458416898.

The spelling of 2101312229 in words is "two billion, one hundred one million, three hundred twelve thousand, two hundred twenty-nine".