212002231 has 4 divisors (see below), whose sum is σ = 242288272. Its totient is φ = 181716192.

The previous prime is 212002229. The next prime is 212002261. The reversal of 212002231 is 132200212.

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

It is not a de Polignac number, because 212002231 - 2¹ = 212002229 is a prime.

It is a super-2 number, since 2×212002231² = 89889891897954722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212002261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15143010 + ... + 15143023.

It is an arithmetic number, because the mean of its divisors is an integer number (60572068).

Almost surely, 2^212002231 is an apocalyptic number.

212002231 is a deficient number, since it is larger than the sum of its proper divisors (30286041).

212002231 is an equidigital number, since it uses as much as digits as its factorization.

212002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30286040.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212002231 is about 14560.2963912140. The cubic root of 212002231 is about 596.2752874109.

Adding to 212002231 its reverse (132200212), we get a palindrome (344202443).

The spelling of 212002231 in words is "two hundred twelve million, two thousand, two hundred thirty-one".