212245111 has 8 divisors (see below), whose sum is σ = 229657904. Its totient is φ = 194987520.

The previous prime is 212245109. The next prime is 212245123. The reversal of 212245111 is 111542212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212245111 - 2¹ = 212245109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212245711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35946 + ... + 41431.

It is an arithmetic number, because the mean of its divisors is an integer number (28707238).

Almost surely, 2^212245111 is an apocalyptic number.

212245111 is a deficient number, since it is larger than the sum of its proper divisors (17412793).

212245111 is a wasteful number, since it uses less digits than its factorization.

212245111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77601.

The product of its digits is 160, while the sum is 19.

The square root of 212245111 is about 14568.6344933216. The cubic root of 212245111 is about 596.5029077694.

Adding to 212245111 its reverse (111542212), we get a palindrome (323787323).

It can be divided in two parts, 21224 and 5111, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 212245111 in words is "two hundred twelve million, two hundred forty-five thousand, one hundred eleven".