212922733 has 4 divisors (see below), whose sum is σ = 214990048. Its totient is φ = 210855420.

The previous prime is 212922673. The next prime is 212922751. The reversal of 212922733 is 337229212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-212922733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212922695 and 212922704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212922133) 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, 1033503 + ... + 1033708.

It is an arithmetic number, because the mean of its divisors is an integer number (53747512).

Almost surely, 2^212922733 is an apocalyptic number.

It is an amenable number.

212922733 is a deficient number, since it is larger than the sum of its proper divisors (2067315).

212922733 is a wasteful number, since it uses less digits than its factorization.

212922733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067314.

The product of its digits is 9072, while the sum is 31.

The square root of 212922733 is about 14591.8721554158. The cubic root of 212922733 is about 597.1370395274.

It can be divided in two parts, 21292 and 2733, that added together give a square (24025 = 155²).

The spelling of 212922733 in words is "two hundred twelve million, nine hundred twenty-two thousand, seven hundred thirty-three".