10215211 has 2 divisors, whose sum is σ = 10215212. Its totient is φ = 10215210.

The previous prime is 10215173. The next prime is 10215229. The reversal of 10215211 is 11251201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10215211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10215191 and 10215200.

It is not a weakly prime, because it can be changed into another prime (10215251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5107605 + 5107606.

It is an arithmetic number, because the mean of its divisors is an integer number (5107606).

Almost surely, 2^10215211 is an apocalyptic number.

10215211 is a deficient number, since it is larger than the sum of its proper divisors (1).

10215211 is an equidigital number, since it uses as much as digits as its factorization.

10215211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 10215211 is about 3196.1243717978. The cubic root of 10215211 is about 216.9780393585.

Adding to 10215211 its reverse (11251201), we get a palindrome (21466412).

The spelling of 10215211 in words is "ten million, two hundred fifteen thousand, two hundred eleven".