212140233 has 12 divisors (see below), whose sum is σ = 309289968. Its totient is φ = 140104440.

The previous prime is 212140213. The next prime is 212140237. The reversal of 212140233 is 332041212.

It is not a de Polignac number, because 212140233 - 2²⁵ = 178585801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212140237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109183 + ... + 111108.

It is an arithmetic number, because the mean of its divisors is an integer number (25774164).

Almost surely, 2^212140233 is an apocalyptic number.

It is an amenable number.

212140233 is a deficient number, since it is larger than the sum of its proper divisors (97149735).

212140233 is a wasteful number, since it uses less digits than its factorization.

212140233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220404 (or 220401 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212140233 is about 14565.0346034604. The cubic root of 212140233 is about 596.4046403481.

Adding to 212140233 its reverse (332041212), we get a palindrome (544181445).

The spelling of 212140233 in words is "two hundred twelve million, one hundred forty thousand, two hundred thirty-three".