211230115 has 4 divisors (see below), whose sum is σ = 253476144. Its totient is φ = 168984088.

The previous prime is 211230101. The next prime is 211230127. The reversal of 211230115 is 511032112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211230115 - 2⁷ = 211229987 is a prime.

It is a super-2 number, since 2×211230115² = 89236322965826450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21123007 + ... + 21123016.

It is an arithmetic number, because the mean of its divisors is an integer number (63369036).

Almost surely, 2^211230115 is an apocalyptic number.

211230115 is a deficient number, since it is larger than the sum of its proper divisors (42246029).

211230115 is an equidigital number, since it uses as much as digits as its factorization.

211230115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42246028.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 211230115 is about 14533.7577728542. The cubic root of 211230115 is about 595.5505249999.

Adding to 211230115 its reverse (511032112), we get a palindrome (722262227).

The spelling of 211230115 in words is "two hundred eleven million, two hundred thirty thousand, one hundred fifteen".