215455010213 has 2 divisors, whose sum is σ = 215455010214. Its totient is φ = 215455010212.

The previous prime is 215455010137. The next prime is 215455010297. The reversal of 215455010213 is 312010554512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163120669924 + 52334340289 = 403882^2 + 228767^2 .

It is a cyclic number.

It is not a de Polignac number, because 215455010213 - 2¹⁴ = 215454993829 is a prime.

It is a super-2 number, since 2×215455010213² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215455015213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107727505106 + 107727505107.

It is an arithmetic number, because the mean of its divisors is an integer number (107727505107).

Almost surely, 2^215455010213 is an apocalyptic number.

It is an amenable number.

215455010213 is a deficient number, since it is larger than the sum of its proper divisors (1).

215455010213 is an equidigital number, since it uses as much as digits as its factorization.

215455010213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 215455010213 its reverse (312010554512), we get a palindrome (527465564725).

The spelling of 215455010213 in words is "two hundred fifteen billion, four hundred fifty-five million, ten thousand, two hundred thirteen".